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Journal articles on the topic 'Aluminium Composites'
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1
Muthu Kamatchi, R., R. Muraliraja, J. Vijay, C. Sabari Bharathi, M. Kiruthick Eswar, and S. Padmanabhan. "Synthesis of Newly Formulated Aluminium Composite through Powder Metallurgy using Waste Bone Material." E3S Web of Conferences 399 (2023): 03016. http://dx.doi.org/10.1051/e3sconf/202339903016.
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The increasing concern for sustainable materials and waste management has led to innovative approaches in material science. This study explores the potential benefit of aggregate waste in the production of aluminum composites practicing powder metallurgy techniques. The aim is to investigate the feasibility of incorporating bone material into aluminium matrices to enhance the composite’s mechanical properties. The research involves several key steps. Firstly, waste bone material is collected and processed to obtain a fine powder suitable for powder metallurgy. Various techniques such as grinding, milling, or pulverization are employed to achieve the desired particle size distribution. Next, the bone powder is mixed with aluminium powder in predetermined ratios to create composite blends. The composite blends are then subjected to compaction using powder metallurgy techniques, including cold pressing and sintering. The compaction process aims to consolidate the powders and facilitate the formation of a solid composite structure. The aluminum composites mechanical characteristics are then assessed. The effects of incorporating bone material are assessed using tests on tensile strength, ductility, hardness, and other relevant mechanical properties. Comparative analysis is performed between the composites with bone material and traditional aluminium composites to assess any improvements or changes in performance.
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Liu, He Ping, Feng Er Sun, Shao Lei Cheng, Lang Lang Liu, and Yi Bo Gao. "Microstructure Analysis and Preparation of Graphene Reinforced Aluminum Matrix Composites." Key Engineering Materials 814 (July 2019): 102–6. http://dx.doi.org/10.4028/www.scientific.net/kem.814.102.
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Although many problems in aluminium matrix composites have been solved, there are still many difficulties and challenges that need to be solved. In this work, graphene reinforced aluminum matrix composites are prepared by hot isostatic pressing and vacuum sintering. The microstructures of composite powders and composites were studied by means of scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The effects of different ball milling parameters on the microstructures of composite powders were analyzed. The particle size of graphene coated aluminium composite powder increases with the increase of ball-to-material ratio. With the increase of milling time, graphene was gradually dispersed and coated on the aluminium powder particles, and the aluminium powder particles could be completely coated. with the increase of the speed, the large particles are extruded, sheared and the particles become smaller. The internal micro-deformation characteristics of graphene reinforced aluminium matrix composites were analyzed in detail.
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Dawood, Nawal Mohammed. "Erosion-Corrosion Behavior of Al-20%Ni-Al2O3 Metal Matrix Composites by Stir Casting." Materials Science Forum 1002 (July 2020): 161–74. http://dx.doi.org/10.4028/www.scientific.net/msf.1002.161.
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Aluminium as matrix in particulars have been vastlys investigateds, this is becauses of the diverses applicationss of aluminium dues to its exceptional propertiess. Material scientistss alwayss face a challenges when it comess to the tribologicals and mechanicals propertiess of aluminium, as it exudess rather poors behaviours in these aspectss. Hences this works aims to improves the mechanicals and corrosives resistances of Aluminiums by reinforcings with aluminum oxides and Nickel throughs stir casting usings vortex techniques. Al-Ni-Al2O3 composites with percentages of Ni fixed at 20 % and Al2O3 differed through 4-8% in incrementss of 2 wt. % . Composites material was prepareds by stir castings using vortex techniques. The hardness value of the aluminiums matrix composites improved with increaseds percentages of Al2O3, maximums increase was obtaineds for 8% Al2O3 composite, viewing an increases of about 55%. A generals corrosions and erosion-corrosions for the Al-20%Ni bases alloys and the prepareds composites were carrieds out in 3.5wt% NaCl solutions as corrosives mediums for general corrosions while in erosion-corrosions with impacts angles 90° in slurry solutions ( 1wt%SiO2 sand in 3.5wt% NaCl solution as the erodent). It was founds that the general corrosions rates for composite specimens is lower than thats of the bases alloy (Al-20%Ni). In case of erosion-corrosion resultss, it was founds that the erosion corrosions resistances property of the prepareds composites improveds significantlys with the increaseds percentages of Al2O3. There wass a noticeable improvements in the corrosion resistances of the aluminiums composites compareds to its purest forms, owing to the presences of nickel. Howevers, the increases in Al2O3 percentages decrease the corrosions rates. The extreme decreases was obtaineds for 8% Al2O3 composites, with a decreases of 26% corrosion rates in (mpy) unit for composites material is lowers than that of the bases alloys.
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Epaarachchi, Jayantha Ananda, and Matthew T. Reushle. "Performance of Aluminium / Vinylester Particulate Composite." Materials Science Forum 654-656 (June 2010): 2656–59. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.2656.
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The performances of aluminum /vinylester particulate-composites were studied in detail in order to investigate its suitability for engineering applications. This study examined the suitability of atomised aluminum particles for particulate reinforcement of a vinyl ester resin. Mechanical properties were obtained for the composite by testing various percentages of aluminium powder (75-150 m) and vinylester resin. It has been found that the inclusion of Al powder has not significantly changed the properties of vinylester resin, however an improvement in the ductility of the composite has been recorded. The optimal performances of the composite were exhibited by 15% Al composition. The properties of the particulate composites were modeled using numerous empirical models. Unfortunately a significant difference was found between some of the experimental and predicted properties of the Al/vinylester particulate composite. This paper intends to detail the variation of mechanical properties with the change of Al volume fraction in the composite and the performances of empirical models in prediction of the properties of particulate composites.
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Pruncu, Catalin Iulian, Alina Vladescu, N. Rajesh Jesudoss Hynes, and Ramakrishnan Sankaranarayanan. "Surface Investigation of Physella Acuta Snail Shell Particle Reinforced Aluminium Matrix Composites." Coatings 12, no. 6 (June 8, 2022): 794. http://dx.doi.org/10.3390/coatings12060794.
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Aluminium-matrix composite is one of the most preferred engineering materials and is known for its potential benefits, such as lightweight nature, high specific stiffness, superior strength, machinability, etc. The metal–matrix composites are very attractive for critical applications: Aerospace field, defense deployments, automotive sector, marine industry. In the present work, novel Physella Acuta Snail Shell particle reinforced aluminium metal–matrix composites are developed to facilitate cost-effective and sustainable manufacturing. These green composites are developed by stir-casting with LM0 as matrix material and snail shell as reinforcement with a distinct percentage (by weight) of inclusion. The influence of snail shells is analyzed through tribological, morphological, and corrosion studies. Aluminium–matrix composite Al98SNS2 with 98% (by weight) aluminium matrix and 2% (by weight) snail shell reinforcement exhibits superior performance in all investigations. Al98SNS2 composite exhibits the least wear rate in the atmosphere of deionized water and 3.5% NaCl. Corrosion deteriorates the surface roughness irrespective of the percentage of incorporation of snail shell reinforcement. However, the deterioration is minimal in Al98SNS2. The current research findings indicate that the incorporation of snail shell in aluminum metal–matrix composites promotes cost-effective, sustainable, and eco-friendly manufacturing.
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Joseph, Olufunmilayo Oluwabukola, and Micheal Olalekan Aluko. "Effect of Synthetic Materials in Reinforcement of Aluminium Matrix Composites." Materials Science Forum 1076 (December 8, 2022): 3–11. http://dx.doi.org/10.4028/p-o2816k.
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Aluminium matrix composite is a type of innovative technical material that have applications in aerospace, automotive, biotechnology, electronics, and a lot more. Non-metallic reinforcements can be injected into an aluminium alloy to provide advantages over base metal (Al) alloys. Better mechanical properties, improved microstructure, and corrosion resistance are the benefits that have been noticed upon reinforcements. The proportion of reinforcement, kind, size, and forms of aluminium matrix are all important factors in improving mechanical and tribological properties. Investigation in the creation of highly advanced tailored materials using liquid and solid-state processes and the impact it has on the properties and application are the subject of this work. The current research summarizes recent breakthroughs in aluminium-based composites and other particle reinforcement effects. The experiment findings revealed that strengthening the aluminum matrix with reinforcements increased mechanical properties and improves the microstructure. Also, stir casting was seen to be the most popular liquid metal approach because of its cost effectiveness and processing parameters which could easily be adjusted and monitored. It is concluded that aluminum matrix composites have greater mechanical characteristics, microstructure, and corrosion resistance than unreinforced aluminum alloys.
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Shivakumar, S. P., A. S. Sharan, and K. Sadashivappa. "Experimental Investigations on Vibration Properties of Aluminium Matrix Composites Reinforced with Iron Oxide Particles." Applied Mechanics and Materials 895 (November 2019): 122–26. http://dx.doi.org/10.4028/www.scientific.net/amm.895.122.
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Aluminium matrix composites offer improved damping properties than other metals and its alloy. Generally pure metals and its alloys may have fairly good mechanical properties but falls short in damping properties. Aluminium matrix composites are becoming important in aerospace automobile and marine applications due to its god damping properties. The present investigation is concerned with the damping capacity of iron oxide (Fe2O3) reinforced aluminium matrix composite. The composites were fabricated with 2%, 4% and 6%, by weight of iron oxide with varied particle of size 40 μm and 500 nm in equal proportions using stir casting process. From the results obtained the 500 nm size with 4 wt% of iron oxide showed improved dynamic properties. The iron oxides reinforced with aluminum matrix are found to be new substitutes for the existing materials with low damping properties.
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Seikh, Ziyauddin, Mukandar Sekh, Sandip Kunar, Golam Kibria, Rafiqul Haque, and Shamim Haidar. "Rice Husk Ash Reinforced Aluminium Metal Matrix Composites: A Review." Materials Science Forum 1070 (October 13, 2022): 55–70. http://dx.doi.org/10.4028/p-u8s016.
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Metal matrix composite materials are a novel material generation capable of handling the implementation of advanced technology's growing needs. Aluminium-based metal matrix composites are widely used in automobiles and aerospace, as well as other industries, including defence and marine systems, due to their relatively low processing costs as compared to other matrices such as magnesium, copper, titanium, and zinc. Ceramic particles were shown to improve mechanical properties like hardness and tensile strength. The product's compactness and price, however, were both boosted. Agricultural waste materials are widely available today in significant amounts, and researchers have focused on using wastes as reinforcing fillers in composites to counteract pollution. Rice husk ash added to an aluminium alloy matrix increases the composite's mechanical properties while also increasing its wear resistance. According to scanning electron micrographs of the composite, the ash from rice husks is evenly distributed all over the aluminium matrix. Wear can vary from micro-cutting to oxidation at high temperatures in an aluminium alloy. Strain fields are produced and composite material wear resistance is improved due to the difference in coefficients of thermal expansion between the matrix and reinforcing materials. This study focuses on the production process, properties, and performance of an aluminium alloy composite incorporating rice husk ash, which has high hardness as well as wear resistance.
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Muribwathoho, Oritonda, Velaphi Msomi, and Sipokazi Mabuwa. "Metal Matrix Composite Fabricated with 5000 Series Marine Grades of Aluminium Using FSP Technique: State of the Art Review." Applied Sciences 12, no. 24 (December 14, 2022): 12832. http://dx.doi.org/10.3390/app122412832.
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Aluminium metal matrix composites have been shown to make significant contributions to the area of new materials and have become widely accepted in high-tech structural and functional applications such as those in the aircraft, automobile, marine, mineral, defence, transportation, thermal management, automotive, and sports and recreation fields. Metal matrix composites are manufactured using a variety of manufacturing processes. Stirring casting, powder metallurgy, squeezing casting, in situ processes, deposition techniques, and electroplating are part of the manufacturing process used in the manufacture of aluminium-metal matrix composites. Metal matrix composites that use friction stir processing have a distinct advantage over metal matrix composites that use other manufacturing techniques. FSP’s benefits include a finer grain, processing zone homogeneity, densification, and the homogenization of aluminium alloy and composite precipitates. Most metal matrix composite investigations achieve aluminium-metal matrix composite precipitate grain refinement, treated zone homogeneity, densification, and homogenization. This part of the work examines the impact of reinforcing particles, process parameters, multiple passes, and active cooling on mechanical properties during the fabrication of 5000-series aluminium-metal matrix composites using friction stir processing. This paper reports on the available literature on aluminium metal matrix composites fabricated with 5xxx series marine grade aluminium alloy using FSP.
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Bhamare, Nikita Suryakant. "Design Analysis and Weight Optimization of LMV Drive Shaft by Using AL + GF Material." International Journal for Research in Applied Science and Engineering Technology 10, no. 7 (July 31, 2022): 1887–94. http://dx.doi.org/10.22214/ijraset.2022.45609.
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Abstract: Aluminium is mainly used due to their lower weight and high strength among the Metal Composites. Fabrication of composite is done by the winding of composite glass fibre over the aluminium shaft method. Each shaft fabrication content of Eglass fibre and Aluminium with different ratios depends on ANSYS results. The present article attempts to evaluate the mechanical results for Aluminium and Glass fibre composite shaft for torsion test. The results are analyzed for different combination of Aluminium and glass fibre layer. The mechanical properties of composites have improved with the increase in the weight percentage of Aluminium in composite.
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Velavan, K., and K. Palanikumar. "Effect of Silicon Carbide (SiC) on Stir Cast Aluminium Metal Matrix Hybrid Composites – A Review." Applied Mechanics and Materials 766-767 (June 2015): 293–300. http://dx.doi.org/10.4028/www.scientific.net/amm.766-767.293.
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Nowadays, the usage of metal matrix composites is increased in aero space, automotive, marine, electronic and manufacturing industries. Aluminum metal matrix composites have attained significant attention due to their good mechanical properties like strength, stiffness, abrasion and impact resistant, corrosion resistance. When compared to the conventional materials Aluminum Silicon Carbide (AlSiC) hybrid materials available in minimum cost. In the present study, based on the literature review, the individual Silicon Carbide with aluminum and combined influence of Silicon Carbide with graphite reinforcements Aluminium Metal Matrix Composites and Silicon Carbide with mica reinforcement Aluminum is studied. The monolithic composite materials are combined in different compositions by stir casting fabrication techniques, to produce composite materials. The literature review framework in this paper provides a clear overview of the usage of Graphite and Mica as a reinforcing agent in different composition matrices along with its distinctive performances.
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Sarkar, Pujan, Nipu Modak, and Prasanta Sahoo. "Mechanical Characteristics of Aluminium Powder Filled Glass Epoxy Composites." International Journal of Engineering and Technologies 12 (October 2017): 1–14. http://dx.doi.org/10.18052/www.scipress.com/ijet.12.1.
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Mechanical characteristics of glass epoxy and aluminium powder filled glass epoxy composites are experimentally investigated using INSTRON 8801 testing device as per ASTM standards. With a fixed wt% of fiber reinforcement, glass epoxy and 5-15 wt% aluminium powder filled glass epoxy composites are fabricated in conventional hand lay-up technique followed by light compression moulding process. Experimental results show that aluminium powder as a filler material influences the mechanical properties. Density and void fraction in composites increase whereas steady decrease of tensile strength is recorded with aluminium powder addition. Micro hardness, flexural strength, inter laminar shear strength (ILSS) of 5 and 10 wt% aluminium content composites are improved compared to unfilled glass epoxy composite and with further addition of aluminium up to 15 wt% decreasing trends are observed. Glass epoxy with 5 wt% aluminium concentration shows the highest improvement. Tensile modulus for aluminium addition of 5 wt% decreases whereas 10 wt% aluminium filled composite shows improvement in tensile modulus. These are explained on the basis of material properties, void fractions and bonding strength among the constituents.
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Sarkar, Pujan, Nipu Modak, and Prasanta Sahoo. "Mechanical Characteristics of Aluminium Powder Filled Glass Epoxy Composites." International Journal of Engineering and Technologies 12 (October 5, 2017): 1–14. http://dx.doi.org/10.56431/p-27z4w9.
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Mechanical characteristics of glass epoxy and aluminium powder filled glass epoxy composites are experimentally investigated using INSTRON 8801 testing device as per ASTM standards. With a fixed wt% of fiber reinforcement, glass epoxy and 5-15 wt% aluminium powder filled glass epoxy composites are fabricated in conventional hand lay-up technique followed by light compression moulding process. Experimental results show that aluminium powder as a filler material influences the mechanical properties. Density and void fraction in composites increase whereas steady decrease of tensile strength is recorded with aluminium powder addition. Micro hardness, flexural strength, inter laminar shear strength (ILSS) of 5 and 10 wt% aluminium content composites are improved compared to unfilled glass epoxy composite and with further addition of aluminium up to 15 wt% decreasing trends are observed. Glass epoxy with 5 wt% aluminium concentration shows the highest improvement. Tensile modulus for aluminium addition of 5 wt% decreases whereas 10 wt% aluminium filled composite shows improvement in tensile modulus. These are explained on the basis of material properties, void fractions and bonding strength among the constituents.
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Hamritha, S., M. Shilpa, M. R. Shivakumar, G. Madhoo, Y. P. Harshini, and Harshith. "Study of Mechanical and Tribological Behavior of Aluminium Metal Matrix Composite Reinforced with Alumina." Materials Science Forum 1019 (January 2021): 44–50. http://dx.doi.org/10.4028/www.scientific.net/msf.1019.44.
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Aluminium alloy has gained importance in the automotive and aerospace industry as it is easily available and easy in manufacturing. In the recent years, materials science has gained huge importance in the field of composites. In the field of composites metal matrix composite is playing a lead role in industrial applications. The unique combinations of properties provided by aluminum and its alloys make aluminum one of the most versatile, economical and attractive metallic materials. To enhance the properties of aluminum, it has been reinforced with alumina, silicon carbide, graphene and others. In this study, A357 aluminum has been strengthened by using different weight percent of alumina as reinforcement. Percentage of alumina used are 4%, 8% and 12% to enhance the mechanical and tribological property of A357.The fabricated samples were studied to understand the performance of the composite for mechanical and tribological characters. It was observed that the composites showed superior properties compared to the base material. Statistical analysis i.e. regression analysis has been carried out for hardness and tensile strength of alumina reinforced aluminum composite.
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Mir, Fayaz Ahmad, Noor Zaman Khan, Arshad Noor Siddiquee, and Saad Parvez. "Joining of aluminium matrix composites using friction stir welding: A review." Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 236, no. 5 (January 19, 2022): 917–32. http://dx.doi.org/10.1177/14644207211069616.
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Aluminium matrix composites are one of the most important classes of materials and have become a major focus of attention in aerospace, aeronautical, defense, and automotive industries. Aluminium matrix composites when compared to conventional alloys offer various promising properties like excellent strength-to-weight ratio, higher stiffness, lower coefficient of thermal expansion, better dimensional stability, and tribological behavior. The properties of aluminium matrix composites are highly influenced by the appropriate selection of metal matrix, processing routes, and reinforcement. Various ceramic particles (oxides, carbides, nitrides, borides, etc.) are used as reinforcements for aluminium matrix composites. Significantly different properties may be obtained using various reinforced particles and matrix material, which makes it difficult for the traditional fusion welding techniques to meet the joining requirements of these composites and is restricted to certain grades of materials. Solid-state welding process offers greater advantages over the conventional fusion welding. As a solid-state joining process, friction stir welding has proven to be a better and promising technique for joining aluminium matrix composites. However, it is still subjected to various challenges to join aluminium matrix composites even with considerable progress has been made in recent years. The current review provides an overview of state-of-the-art of friction stir welding of aluminium matrix composite materials. Specific attention and critical assessment have been given to weldability, the macrostructure and microstructure of aluminium matrix composite joints, mechanical properties of joints, fractography, and the wear of friction stir welding tool during welding of aluminium matrix composite. Furthermore, the various existing challenges of friction stir welding of aluminium matrix composites are summarized and the recommendations for future research are proposed.
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Nallusamy, S., and J. Logeshwaran. "Effect on Aluminium Metal Matrix Composite Reinforced with Nano Sized Silica Particles." Journal of Metastable and Nanocrystalline Materials 29 (August 2017): 25–34. http://dx.doi.org/10.4028/www.scientific.net/jmnm.29.25.
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In recent times, it could be observed that metal matrix composites receive considerable importance on account of improved properties compared to unreinforced alloys which includes high specific strength, specific modulus, damping capacity and good wear resistance. Interest in composites containing low density and low cost reinforcements has been since growing. Among various discontinuous particulate, silica is one of the most inexpensive and low density reinforcement available in large quantities. Hence, composites with aluminium oxide as reinforcement after the in-situ reaction of aluminium and silica are likely to overcome the cost barrier for wide spread applications in automotive and small engine applications. It is therefore expected that the incorporation of aluminium oxide particles in aluminium alloy will improve the mechanical properties of base material that will see increased usage in aircraft application due to reduced weight. In this research an effect on aluminum matrix composite reinforced with nano sized silica particles with different weight percentage was carried out. From the results it was found that the composites with 4 to 6wt% particle volume fraction to be the best with good tensile strength, yield stress and percentage elongation.
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S, Udayashankar, and V. S.Ramamurthy. "Development and Characterization of Al6061-Zirconium Dioxide Reinforced Particulate Composites." International Journal of Engineering & Technology 7, no. 3.12 (July 20, 2018): 128. http://dx.doi.org/10.14419/ijet.v7i3.12.15901.
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Particulate reinforced Aluminium based metal matrix composites are widely used in aerospace, defense, marine and space applications because their excellent properties such as high strength, high stiffness, high corrosion resistance, high fatigue resistance, high wear resistance etc., In the present work Aluminum Alloy Al6061-Zirconium dioxide composites were developed by stir casting technique by varying the percentage of Zirconium dioxide in steps of 3% up to 12%.The samples were prepared as per ASTM standards for microstructure study, tensile strength and hardness properties. The microstructure studies carried using optical microscope revealed the presence of Zirconium dioxide particulates in the Aluminium matrix. Also it revealed the uniform distribution of Zirconium dioxide in the Aluminium matrix and no voids and porosity were present in the matrix. The tensile strength and hardness properties were more than the base metal aluminium alloy. The tensile strength and hardness properties were increased with the increase in percentage of Zirconium dioxide up to 9% and decreased there afterwards. The optimum value for hardness and tensile strength of the composite was obtained at 9% of Zirconium dioxide.
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Emi Nor Ain Mohammad, Nurul, Aidah Jumahat, and Mohamad Fashan Ghazali. "Impact Properties of Aluminum Foam – Nanosilica Filled Basalt Fiber Reinforced Polymer Sandwich Composites." International Journal of Engineering & Technology 7, no. 3.11 (July 21, 2018): 77. http://dx.doi.org/10.14419/ijet.v7i3.11.15934.
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This paper investigates the effect of nanosilica on impact and energy absorption properties of sandwich foam-fibre composites. The materials used in this study are closed-cell aluminum (Al) foam (as the core material) that is sandwiched in between nanomodified basalt fiber reinforced polymer (as the face-sheets). The face sheets were made of Basalt Fibre, nanosilica and epoxy polymer matrix. The sandwich composite structures are known to have the capability of resisting impact loads and good in absorbing energy. The objective of this paper is to determine the influence of closed-cell aluminum foam core and nanosilica filler on impact properties and fracture behavior of basalt fibre reinforced polymer (BFRP) sandwich composites when compared to the conventional glass fibre reinforced polymer (GFRP) sandwich composites. The drop impact tests were carried out to determine the energy absorbed, peak load and the force-deflection behaviour of the sandwich composite structure material. The results showed that the nanomodified BFRP-Al foam core sandwich panel exhibited promising energy absorption properties, corresponding to the highest specific energy absorption value observed. Also, the result indicates that the Aluminium Foam BFRP sandwich composite exhibited higher energy absorption when compared to the Aluminium foam GFRP sandwich composite.
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Maganti, Naga Venkata Ramesh, and Ravikanth Raju Potturi. "Investigation on Mechanical and Machinability Properties of Aluminium Metal Matrix Composite Reinforced with Titanium Oxide (TiO2) and Graphite (Gr) Particles." Trends in Sciences 20, no. 11 (August 25, 2023): 5682. http://dx.doi.org/10.48048/tis.2023.5682.
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This research paper deals with the preparation process and testing of metal matrix composites comprising Aluminium alloy (Al 6061) as the base metal and Titanium oxide (TiO2) and Graphite (Gr) as reinforcements. Due to their high specific strength, superior malleability, lightweight, stiffness and excellent resistance to corrosion, oxidation and wear, the aluminium metal matrix composites are preferred in the automobile and industrial sectors for component manufacturing. No work reported on machinability properties of Titanium oxide (TiO2) and Graphite (Gr) reinforced aluminium composites so far. This study prepared and studied samples composed of variable proportions of titanium oxide and graphite. The samples were prepared using the stir casting method. While stirring, the required additives were added to the molten aluminium mixture. To perform the tests, the samples were prepared according to standard dimensions after solidification. The mechanical properties of the prepared composite were examined using various test procedures, such as strength and hardness. Scanning electron microscopy was used to examine the microstructure of the test composite samples. The EDAX test confirmed the presence of graphite and Titanium oxide in the aluminium based composite specimens. Furthermore, machining was done to study the cutting forces on the tool. The test results showed a significant impact of the reinforced materials on the mechanical and machinability properties of aluminium metal matrix composites. Gr decreases hardness, while TiO2 increases it. TiO2 and Gr reinforcements increase the tensile strength of Al 6061 composites. The addition of TiO2 decreased the composite's elongation. The proof strength of 2 % Al6061 was high, however it decreased with 3 % Gr and increased with TiO2 reinforcement. Reinforcements increase cutting forces during machining; when comparing the machining of Al 6061 to that of 3 % Gr and 5 % TiO2, a 50 % increase in cutting forces is noticed. However, excessive reinforcements may reduce cutting forces due to poor matrix-reinforcement adhesion. HIGHLIGHTS The mechanical and machinability properties of aluminium metal metrics reinforced with Titanium oxide (TiO2) and graphite (Gr) have not been reported so far in the literature. In this study, aluminium based composites reinforced with variable proportions of titanium oxide and graphite were prepared and studied. The fabrication process was done by stir casting by adding the required additives into the molten mixture of aluminium, followed by continuous stirring. The solidified samples were cut according to the standard dimensions and various test procedures were conducted to examine the mechanical and machinability properties of the prepared composites. Gr reduces hardness, whereas TiO2 enhances it. TiO2 and Gr reinforcements boost Al 6061 composite tensile strength. TiO2 addition reduced elongation of the composite. 2 % proof strength of Al 6061 was strong, however it dropped with 3 % Gr and rose with TiO2 reinforcement. Reinforcements results higher cutting forces while machining, however excessive supplements lower cutting forces may be due to poor matrix-reinforcement bonding. GRAPHICAL ABSTRACT
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Karcagi, Rita, and János Lukács. "Fatigue Crack Growth Tests on Carbon Fibre Reinforced Aluminium Matrix Composites." Materials Science Forum 473-474 (January 2005): 111–16. http://dx.doi.org/10.4028/www.scientific.net/msf.473-474.111.
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Composite materials combine the advantages of their components. Carbon fibre reinforced composites are used in construction where reduced weight is critical. To produce carbon fibre reinforced composites, aluminium alloys can be the matrix. Advantageous properties of aluminium matrix composites – good toughness, low weight – are applied in aerospace and automotive industry. Because aluminium alloys are not reactive to carbon, therefore the coating of the fibres can solve the problem. Nickel coated and chemically treated carbon fibres were used to producing of aluminium matrix composites. The investigated composite materials were prepared by pressure infiltration. The influence of treating of carbon fibres was examined on the fracture mechanical properties of aluminium matrix composites. Three types of matrix materials, three types of carbon fibres and four types of surface treatment were studied. Fatigue crack growth tests were performed under mode I loading condition and the failure mechanisms of the composite materials were investigated. Test results belonging to different coated fibres were compared, and our results were compared with the results from the literature, too.
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Mallik, B., K. Sikdar, and D. Roy. "Synthesis and Characterization of Aluminium Base in situ Metal Matrix Composites by Spark Plasma Sintering." Journal of Materials Science Research 7, no. 1 (December 29, 2017): 14. http://dx.doi.org/10.5539/jmsr.v7n1p14.
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Fe-aluminide and alumina reinforced in-situ aluminium based metal matrix composite was prepared by spark plasma sintering (SPS) of aluminium and nanosized Fe2O3 powder mixture. In-situ reinforcements were formed during SPS by exothermal reaction between aluminium and nano-size Fe2O3 particle. The thermal characteristics of the in-situ reaction were studied by differential scanning calorimetry (DSC). Field Emission Scanning Electron Microscopy (FESEM) along with the Energy Dispersive Spectroscopy (EDS) and X-ray diffraction (XRD) techniques were used to study the microstructural architecture of the composites as a function of SPS temperature and the volume fraction of reinforcement. Microhardness measurement of the composite shows significant increase in hardness with increase in SPS temperature and volume fraction of secondary phase.
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Arulra, M., P. K. Palani, and L. Venkatesh. "Optimization of Process Parameters in Stir Casting of Hybrid Metal Matrix (LM25/SiC/B4C) Composite Using Taguchi Method." JOURNAL OF ADVANCES IN CHEMISTRY 13, no. 11 (March 29, 2017): 6038–42. http://dx.doi.org/10.24297/jac.v13i11.5774.
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Aluminium based composites exhibit many attractive material properties such as increased stiffness, wear resistance, specific strength and vibration damping and decreased co-efficient of thermal expansion compared with the conventional aluminium alloys. Aluminium Matrix Composites consist of non-metallic reinforcement which offers advantageous properties over base material. Reinforcements like SiC, B4C and Al2O3 are normally preferred to improve the mechanical properties. Here Aluminum LM25 is selected as matrix material while Silicon carbide and Boron carbide are selected as reinforcement material. The fabrication of aluminium matrix was done by stir casting method. In the present study an attempt has been made to investigate the effect of three major stir casting parameters (stir speed, stir duration and preheated temperature of reinforcement material) on stir casting of Aluminium LM25 - SiC - B4C composite. Experiments were conducted based on Taguchi methodology. Taguchi quality design concepts of L9 orthogonal array has been used to determine S/N ratio and through S/N ratio a set of optimum stir casting parameters were obtained. The experimental results confirmed the validity of Taguchi method for enhancing tensile strength of castings.
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Arulraj, M., P. K. Palani, and L. Venkatesh. "Optimization of Process Parameters in Stir Casting of Hybrid Metal Matrix (LM25/SiC/B4C) Composite Using Taguchi Method." JOURNAL OF ADVANCES IN CHEMISTRY 13, no. 9 (February 22, 2017): 6475–79. http://dx.doi.org/10.24297/jac.v13i9.5777.
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Aluminium based composites exhibit many attractive material properties such as increased stiffness, wear resistance, specific strength and vibration damping and decreased co-efficient of thermal expansion compared with the conventional aluminium alloys. Aluminium Matrix Composites consist of non-metallic reinforcement which offers advantageous properties over base material. Reinforcements like SiC, B4C and Al2O3 are normally preferred to improve the mechanical properties. Here Aluminum LM25 is selected as matrix material while Silicon carbide and Boron carbide are selected as reinforcement material. The fabrication of aluminium matrix was done by stir casting method. In the present study an attempt has been made to investigate the effect of three major stir casting parameters (stir speed, stir duration and preheated temperature of reinforcement material) on stir casting of Aluminium LM25 - SiC - B4C composite. Experiments were conducted based on Taguchi methodology. Taguchi quality design concepts of L9 orthogonal array has been used to determine S/N ratio and through S/N ratio a set of optimum stir casting parameters were obtained. The experimental results confirmed the validity of Taguchi method for enhancing tensile strength of castings.
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Singh, Lokesh, Shankar Sehgal, and K. Saxena Kuldeep. "Behaviour of Al2O3 in aluminium matrix composites: An overview." E3S Web of Conferences 309 (2021): 01028. http://dx.doi.org/10.1051/e3sconf/202130901028.
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In this paper, behaviour of Al2O3 in aluminium matrix composites is reviewed for its properties and applications. In addition, many metal matrix composite fabrication processes are also elaborated. In the present days the aluminium metal matrix composite is in high demand because of its superior properties. Its demand is still on rise because of its widespread use in automotive industries, aerospace industries and marine industries. The method of the fabrication of aluminium matrix-based composite is also a deciding factor for its resultant properties. Desired composite-properties are achievable by proper selection of reinforcing materials as well as the physical conditions. Various sections of current information compile the details about the behaviour of alumina particles in aluminium-based matrix for formation of metal matrix composites.
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Sunil Kumar Reddy, K., M. Kannan, and R. Karthikeyan. "Evaluation of Mechanical and Thermal Properties of Aluminium-7475 Reinforced with Graphite and Fly ash." E3S Web of Conferences 309 (2021): 01186. http://dx.doi.org/10.1051/e3sconf/202130901186.
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The aluminium is used for variety of reasons and they are known for their improved strength, stiffness, wear resistance which are useful in the marine, space, transport, automobile related industries. When aluminium reinforced with ceramic materials like fly ash, silicon carbide, tungsten carbide, boron carbide, fired bricks then a composite of better plastic forming capability, excellent heat and wear resistance will be formed. The objective of the experiment is to assess the thermal and mechanical properties of the Aluminium Metal Matrix Composites (AMMCs) when reinforced with ceramics. Aluminium (Al-7475) based metal matrix composites reinforced with varying weight percentage of Graphite(Gr) (3%, 6%, 9% and 12%) and fly ash being constant (10wt%) by the stir casting process. The composites tensile strength and hardness improved with the amount of graphite content improved in weight percentage up to 9% then decreased. While the composite’s Thermal Conductivity(TC) and Coefficient of Thermal Expansion(CTE) varying temperature range from 50°Cto 300°C reduces with increase in weight percentage of the graphite content.
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Nirmala Shivram, Padmavat. "Assessment of Ranking of Aluminum-Coconut Shell Ash Composites Using EDAS Method." Journal on Materials and its Characterization 2, no. 1 (March 1, 2023): 48–54. http://dx.doi.org/10.46632/jmc/2/1/6.
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To overcome the difficulty in manufacturing through tools and materials, the present situation calls for the creation of engineering materials to address numerous specific difficulties. Due to attainable qualities that are notable for the components involved, "Metal Matrix Composites (MMCs)" are profitable. Research significance: AMCs are used because of their low density in comparison to aluminium alloys and their interfacial behavior. Due to their outstanding castability and significant erosion protection, AMCs have been effectively repressed in modern automotive production for the “fabrication of various segments, including cylinders, motor lids, connecting shafts, and independent casts”. Research method: The complexity in the evaluation of material assemblage is well-suited to the "multi-criteria decision-making (MCDM)" methodologies. This study ranks "aluminium-coconut shell ash (CSA) composites" using the "EDAS technique", a comparatively fresh and mathematically sophisticated "MCDM (Multi-Criteria Decision Making)" tool. Result: The result obtained by using the EDAS method shows that the rank for 1100 aluminium alloy is fifth, aluminium composite with 5% is fourth, aluminium composite with 10% is second, aluminium composite with 15% is first and aluminium composite with 20% is third.Conclusion: The article's findings indicate that among all materials taken in this research, "aluminium composite with 15% CSA" emerged as the best, followed by "aluminium composite with 10% CSA", whilst the base matrix was discovered to be the material that worked the worst in this investigation.
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Singh, Mandeep, Harish Kumar Garg, Sthitapragyan Maharana, Appusamy Muniappan, M. K. Loganathan, Tien V. T. Nguyen, and V. Vijayan. "Design and Analysis of an Automobile Disc Brake Rotor by Using Hybrid Aluminium Metal Matrix Composite for High Reliability." Journal of Composites Science 7, no. 6 (June 12, 2023): 244. http://dx.doi.org/10.3390/jcs7060244.
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Due to their superior capabilities for manufacturing lightweight automotive components, aluminium metal matrix composites have gained a lot of attention in the last few years. Aluminium metal matrix composites are an exceptional class of metal matrix composites that can solve all the major problems related to the automobile industry. Aluminium matrix composites in the disc braking system have already been employed and studied by many scientists. However, the developed materials are not yet always sufficiently accurate and reliable. In this article, a new enhanced metal matrix composite material is used and studied to improve the efficiency of an ordinary car’s braking system. To improve the accuracy of the designated braking system, an innovative hybrid aluminium matrix composite (Al6061/SiC/Gr)-based brake rotor has been developed, and its effectiveness has been determined by finite element analysis. From the simulation, the product performance confirmed that the hybrid aluminium matrix composite (Al6061/SiC/Gr)-based brake rotor has the potential to replace the standard cast iron brake disc. The new enhanced hybrid composite material used in this study can be used for the efficient design of various braking parts.
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Pugalethi, P., M. Jayaraman, and A. Natarajan. "Evaluation of Mechanical Properties of Aluminium Alloy 7075 Reinforced with SiC and Al2O3 Hybrid Metal Matrix Composites." Applied Mechanics and Materials 766-767 (June 2015): 246–51. http://dx.doi.org/10.4028/www.scientific.net/amm.766-767.246.
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Aluminium based Metal Matrix Composites (MMCs) with Aluminium matrix and non-metallic reinforcements are finding extensive applications in automotive, aerospace and defence fields because of their high strength-to-weight ratio, high stiffness, hardness, wear-resistance, high-temperature resistance, etc. Composite materials are frequently chosen for structural applications because they have desirable combinations of mechanical characteristics. Development of hybrid metal matrix composites has become an important area of research interest in Material Science. In this work, the Aluminium alloy is reinforced with 3,5,7,9 wt. % of Al2O3 and 2 wt. % of SiC to prepare the hybrid composite. The present study is aimed at evaluating the physical properties of aluminium 7075 in the presence of silicon carbide, aluminium oxide and its combinations. The compositions are added up to the ultimate level and stir casting method is used for the fabrication of aluminium metal matrix composites. The mechanical behaviours of metal matrix composites like tensile strength, and hardness test are investigated by conducting laboratory experiments. Mechanical properties like micro hardness and tensile strength of Al7075 alloy increase with the addition of SiC and Al2O3 reinforcements.
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Niu, Hui Jun, Zhi Yi Zhang, Wei Guo, Yi Xue, and Zhen Xing Yao. "Mechanical, Morphological and Thermally Behaviors of Natural Rubber/Aluminum Powder Composites." Key Engineering Materials 501 (January 2012): 289–93. http://dx.doi.org/10.4028/www.scientific.net/kem.501.289.
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Different content of aluminum powder was mixed into natural rubber. Aluminum powder was modified by different coupling agents via wet method, and the modified aluminum filler/NR composite was prepared. The mechanical properties, thermal conductivity and thermogravimetric analysis of the composites was investigated. The results showed that the best physical properties and thermal conductivity of composites were achieved with saline coupling agent Si-69, and Thermo decomposing temperature of 3%TM-38S matching composites improved evidently. SEM test indicated that boundary surface of aluminium fillers and rubber was obviously improved when aluminum powder was modified by coupling agent, which would result in preferable mechanical property. The result of Thermogravimetric analysis showed that after aluminum powder filler was modified by three coupling agents, thermo decomposing temperature and hot lost weight of composites rose obviously. With the increase of Al powder content the thermal conductivity improved greatly, Thermal conductivity of Al/NR composites lay between 0.25 and 0.47 W·m-1·K-1.
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Thayumanavan, M., and K. R. Vijaya Kumar. "Fabrication and Mechanical Behaviour Investigation on Aluminium 7075 Boron Carbide and Inconel Alloy 625 Metal Matrix Composite Using Ultra Sonic Stir Casting Method." Annales de Chimie - Science des Matériaux 46, no. 6 (December 31, 2022): 333–38. http://dx.doi.org/10.18280/acsm.460607.
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Aluminium metal matrix composites produced using the ultrasonic stir casting method offer important benefits in aerospace and automotive applications. Aluminium composite material utility has recently increased in all engineering sectors due to its high strength, good wear and corrosive resistance. This study was designed to disperse boron carbide and Inconel Alloy 625 reinforced with aluminium 7075. By varying the weight percentages of boron carbide (2wt percent,4wt percent,6wt percent, and 8wt percent) and Inconel alloy 625 (2wt percent,4wt percent,6wt percent, and 8wt percent) for aerospace applications. The scanning electron microscope was used to examine the morphology and distribution of reinforced particles in a synthetic aluminium composite material. It virtually depicts the uniform distribution of reinforcement particles in the base material matrix (Aluminium 7075). To determine the hardness of the hybrid composite material, a Brinell hardness test was performed. It has been discovered that increasing the reinforcement percentage increases the hardness of the synthesised hybrid composites when compared to the aluminium 7075 base matrix material. Mechanical property testing on fabricated composites specimens of various compositions has been carried out.
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Baghel, Anuj Singh, Ankur Tiwari, R. S. Rana, and Vilas Warudkar. "A Short Review on Effect of Heat Treatment on Microstructure and Mechanical Properties of ADC12/SiC Metal Matrix Composite." Applied Mechanics and Materials 813-814 (November 2015): 3–8. http://dx.doi.org/10.4028/www.scientific.net/amm.813-814.3.
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Aluminium, being the second most abundant metal in earth’s crust, has emerged as an important metal in human civilization’s development. It has served as an excellent substitute for many conventional materials like wood, copper, iron and steel. Now a days, more Aluminium is consumed (on a volumetric basis) than all other non-ferrous metals/alloys including copper.Aluminium and aluminium alloy are gaining huge industrial significance because of their good combination of mechanical, physical properties over the base alloy. In some few recent years the use of metal matrix composite material increases very rapidly due to their high weight to strength ratio, low density, low thermal expansion coefficient, low maintenance and high temperature resistance. Metal matrix composites are widely used in aerospace and automotive engine components. The aluminum alloys are reinforced with Al2O3, B4C and TiC and fabricated by stir casting, centrifugal casting, and powder metallurgy process. In the fabricated metal matrix composites some different tests were conducted to show mechanical properties, micro-structural characterizations of materials were also done. When composite subjected to heat treatments then it significantly affects the micro-structural developments of composite causing to relieving of stress.
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Hembrom, S., B. N. Roy, N. Khobragade, and D. Roy. "Studies on Amorphous Alloy Dispersed Aluminium Matrix Composite Prepared by High Pressure Torsion." Journal of Materials Science Research 5, no. 1 (December 29, 2015): 89. http://dx.doi.org/10.5539/jmsr.v5n1p89.
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<p class="1Body">Aluminium-based composite reinforced with Cu base amorphous alloy dispersed composite was prepared by means of high pressure torsion between a powder mix of aluminium and amorphous Cu base alloy. The X-ray diffraction pattern of powdered and consolidated composites shows the aluminium phase while the thermal stability of the amorphous alloy was studied with the aid of differential scanning calorimetry (DSC). The microstructural feature of the composite through scanning electron microscope reveals the well-distributed reinforcements in the host aluminium matrix. The hardness measurement on the as prepared composites shows significant increase in hardness with increase in reinforced amorphous alloy. Wear property of the synthesized composites were measured by using ball on plate wear tester which shows increase in wear resistance with increase in reinforced amorphous alloys.</p>
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Yan, Yufu, Jiamin Zhao, Long Chen, Hongjian Zhao, Olga Klimova-Korsmik, Oleg V. Tolochko, Fuxing Yin, Puguang Ji, and Shaoming Kang. "Effect of Strain Rate on Compressive Properties of Aluminium-Graphene Composites." Metals 13, no. 3 (March 20, 2023): 618. http://dx.doi.org/10.3390/met13030618.
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Graphene-reinforced aluminium composites have been widely studied due to their excellent mechanical properties. However, only a few studies have reported their dynamic compression properties. The purpose of this study is to investigate the quasi-static and dynamic compression properties of graphene-reinforced aluminium composites. The addition of graphene improved the compressive stress resistance and energy absorption capacity of the aluminium matrix. An aluminium-0.5 wt.% graphene composite exhibited good compressive properties due to the different interfacial wave impedance generated by the additional grain boundaries or Aluminium-Graphene interfaces.
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Muthazhagan, Chinnasamy, A. Gnanavelbabu, G. B. Bhaskar, and K. Rajkumar. "Influence of Graphite Reinforcement on Mechanical Properties of Aluminum-Boron Carbide Composites." Advanced Materials Research 845 (December 2013): 398–402. http://dx.doi.org/10.4028/www.scientific.net/amr.845.398.
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This paper deals with the mechanical properties in conventional heat treatment of Al (6061)-B4C-Graphite. Aluminium Metal Matrix Composites (MMC) is fabricated through two step stir casting method. The composites were fabricated with various volume percentage levels as Aluminium reinforced with (5, 10 &15%) Boron Carbide and (5,10 & 15%) of Graphite. Fabricated composites were subjected to conventional heat treatment for enhancing the mechanical properties. Influences of Graphite reinforcement on mechanical properties of Aluminum-Boron carbide composites were analyzed. The microstructure studies were also carried out. It is observed that increasing the graphite content within the aluminum matrix results in significant decrease in ductility, hardness, ultimate tensile strength. The addition of boron carbide conversely increased the hardness of the composites.
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Bailey, Nick. "Aluminium matrix composites." Reinforced Plastics 63, no. 6 (November 2019): 310–13. http://dx.doi.org/10.1016/j.repl.2019.01.004.
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Bello, Sefiu Adekunle, Johnson Olumuyiwa Agunsoye, Nasirudeen Kolawole Raji, Jeleel Adekunle Adebisi, Isiaka Ayobi Raheem, and Suleiman Bolaji Hassan. "Interfacial Adhesion and Microstructure of Epoxy/Aluminium Particulate Nanocomposites." Nano Hybrids and Composites 32 (April 2021): 1–14. http://dx.doi.org/10.4028/www.scientific.net/nhc.32.1.
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Fibres anisotropy and their poor adhesion to the epoxy matrix are challenges in developing polymeric epoxy composite for structural applications. Filling of epoxy with reinforcing particles has potential for producing isotropic composites. In this study, epoxy-aluminium particulate composites were developed through combined-stir-techniques. Their interfacial adhesion and microstructural properties were examined. Results obtained indicated bonding of aluminium particles to epoxy through bidentate coordinate bond. Variations observed in the Fourier Transform Infrared spectrographs (FTIR) of both composites’ grades confirm discrepancies in interactions of aluminium micro and nanoparticles with epoxy. A good interfacial adhesion of aluminium nanoparticle with epoxy established by both optical and scanning electron microscopes is an indication of good mechanical performance of the epoxy composites.
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Raihanah Hashim, Ummu, Aidah Jumahat, and Muhammad Fashan Md Ghazali. "Quasi-Static Indentation Properties of Aluminium Foam-Frp Sandwich Panel." International Journal of Engineering & Technology 7, no. 3.11 (July 21, 2018): 193. http://dx.doi.org/10.14419/ijet.v7i3.11.15959.
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Synthetic FRP have been used for many years in wide applications owing to their versatility and good performance. However, environmental problems caused by extensive use of polymeric materials arise mainly due to lack of landfill spaces and depletion of finite resources of fossil raw materials, such as petroleum or natural gas. Hence, materials derived from natural products are emerging as potential substitutes for petroleum-based material. The usage of natural fibre reinforced polymer (NFRP) composite have triggered considerable interest to explore the usefulness of this material. Excellent energy absorption of sandwich-structured composite made it a versatile structure used in various industries such transportation, automotive, building construction and marine. On top of that, the research data on aluminium foam as a core material in sandwich panel are limited and need to be further studied. This research is aimed to determine the quasi-static indentation properties of Basalt Fibre Reinforced Polymer/Aluminium Foam (BF-AF) sandwich panel and compare with the properties of Glass Fibre Reinforced Polymer/Aluminium Foam (GF-AF) sandwich panel. In this study, BFRP and GFRP composites with nanosilica were fabricated using vacuum bagging method. Aluminium foam was used as a core in the sandwich panel structure. The quasi-static indentation tests were performed using 10mm indenter and the specimen size was 50mm x 50mm with thickness of 3mm. The effect of aluminum foam on indentation properties were studied. The results showed that the addition of nanosilica enhanced the energy absorption, depth of penetration and damage area of the composites. The indentation properties of BF-AF were higher than those of GF-AF sandwich panel composites. Therefore, this research contributes to a new knowledge on the properties of aluminium foam-FRP composite materials
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Karthik, N., S. Prabhu, Sahil Santosh, and Ashutosh Singh. "Tribological Performance and Microstructural Analysis of an Aluminium Alloy Based Hybrid Composite Produced by P/M." Applied Mechanics and Materials 766-767 (June 2015): 320–23. http://dx.doi.org/10.4028/www.scientific.net/amm.766-767.320.
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In the field of material science and engineering, there is a great impact ever since the invention of composites materials. High strength to weight ratio provides the attractive combination that moves composite materials into new era. The conventional materials like cast iron, steel, and aluminium alloy are replaced by the composite materials due to its superficial properties and could be applied in aerospace and automotive applications. Powder metallurgy fabrication technique is one of the best and attractive methods for producing metal matrix composites because of its better distribution of particles and reliability and cost in manufacturing. In this paper, composites based on aluminium alloy (Al 2024) reinforced with 10% weight fraction of hard ceramics like Aluminium oxide (Al2O3) and 10% weight fraction of Aluminium oxide (Al2O3) with 5% graphite particles is produced by Powder metallurgy method. Hardness and wear test are conducted for the Al 2024, Al-10%Al2O3, and Al-10% Al2O3-5% Graphite. In addition the surfaces of the composite are analyzed by SEM to study the wear of the composites.
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Abdulkareem, Sulyman A., Maryam T. Abdulkareem, Joshua O. Ighalo, Adewale G. Adeniyi, and Mutiu K. Amosa. "Microstructural, functional groups and textural analysis of expanded polyethylene reinforced polystyrene composites with recycled aluminium as ternary component." International Polymer Processing 37, no. 2 (March 8, 2022): 191–99. http://dx.doi.org/10.1515/ipp-2022-4068.
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Abstract The aim of this study is to utilise recycled aluminium, expanded polyethylene (EPE) and expanded polystyrene (EPS) to develop a ternary composite. The study was a preliminary investigation into the microstructural, functional groups and textural properties of the novel material. The material was characterised by Fourier Transform Infra-Red Spectroscopy (FTIR), Scanning Electron Microscopy with Energy Dispersive X-ray analysis (SEM-EDX) and Branueur-Emmet-Teller analysis (BET). The shifts in the FTIR peaks for each of the polymer feedstock in comparison with the binary composite indicated chemical interactions between them. For the ternary composites, there were shifting of peaks as the proportion of the aluminium increased in the composites, suggesting the influence of aluminium on the curing process. Beyond 20% Al filler, there were no significant functional group changes in the composite. SEM revealed that an increase in aluminium filler percentage led to better interfacial adhesion and dispersion. BET revealed that the blend of polystyrene and powdered EPE reduces the surface area, while the introduction of the aluminium particles within the range observed increases the surface area of the hybrid composites formed. As the dispersion of aluminium increased, pore volume increased while pore size decreased.
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Mohammed, Ibrahim, Abd Rahim Abu Talib, Mohamed Thariq Hameed Sultan3, and Syamimi Sadoon. "Fire behavioural and mechanical properties of carbon fibre reinforced aluminium laminate composites for aero-engine." International Journal of Engineering & Technology 7, no. 4.13 (October 9, 2018): 22. http://dx.doi.org/10.14419/ijet.v7i4.13.21323.
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Two different properties of fibre-metal laminate composites (FML), including the fire behaviour and mechanical properties, were experimentally studied in this paper. The fibre-metal laminate composites studied were made of aluminium alloy 2024-T3, carbon fibre, flax, kenaf and epoxy resin/hardener arranged in different forms. The aims of the study are to assess the fire behaviour of the composites using ISO2685 standard and mechanical properties of the composite after withstanding the burn-through according to the standard. The fire test was carried out using ISO2685 standard using a propane-air burner, whereby the propane gas and air serves as the fluid to the system. The universal testing machine of the 100 kN load cell and gun tunnel were used for the mechanical properties test according to each test standard. The fire results showed that three of the FML composites considered in the study are fireproof composites while carbon fibre kenaf reinforced aluminium laminate (CARALL4) is a fire resistant composite. Carbon fibre reinforced aluminium laminate with aluminium alloy at the front and the rear face (CARALL2) withstood higher flame temperature than the other FML composites with 14.4%, 49.0% and 82.8% greater than CARALL1, CARALL3 and CARALL4 in terms of thermal conductivity. In terms of mechanical properties, it was also CARALL2 that has higher tensile, compressive, flexural and impact strength. Therefore, the study showed that carbon fibre flax reinforced aluminium laminate (CARALL3) which is the hybrid composite with green fibre can compete with fibre-metal laminate composites of pure synthetic fibre in terms of their properties.
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Stojanović, Blaža. "Application of aluminium hybrid composites in automotive industry." Tehnicki vjesnik - Technical Gazette 22, no. 1 (2015): 247–51. http://dx.doi.org/10.17559/tv-20130905094303.
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B, Ramesh, and Senthilvelan T. "Formability Characteristics of Aluminium Based Composites-A Review." International Journal of Engineering and Technology 2, no. 1 (2010): 1–6. http://dx.doi.org/10.7763/ijet.2010.v2.91.
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Nassef, Belal G., Mohamed A. Daha, and Mohamed G. Nassef. "Hybrid Reinforced Aluminium Composites Using Reduced Graphene Oxide Fabricated via Powder Metallurgy Technique." Materials Science Forum 1059 (April 25, 2022): 97–101. http://dx.doi.org/10.4028/p-ydo661.
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Recently, carbonaceous materials, such as graphene, have proven to be promising additives that show considerable improvements in mechanical and tribological properties of aluminium-based composites. In this present investigation, novel aluminium based hybrid composite specimens of various RGO and Al2O3 contents are prepared using powder metallurgy technique. The composite specimens have been tested in wear and microhardness. The results show that the hybrid composite containing 0.3 wt.% RGO-5 wt.% Al2O3 experiences the highest wear resistance with a hardness of about 76 HV among the tested composite specimens. The improvement in properties in the optimized hybrid composite was found to be much higher when compared to hybrid Aluminium Composites in literature fabricated using other techniques.
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Faleh, Hazim, Noori Muna, and Florin Ştefănescu. "Properties and Applications of Aluminium-Graphite Composites." Advanced Materials Research 1128 (October 2015): 134–43. http://dx.doi.org/10.4028/www.scientific.net/amr.1128.134.
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In recent year's aluminium and aluminium alloys are widely used in automotive industries. These are light (density of about 2.7 g/cm3), having good malleability and formability, high corrosion resistance and high electrical and thermal conductivity. Metal matrix composites (MMCs) are being employed in industrial applications since they have high specific strength, stiffness, and good wear properties. Due to their favourable properties, composite materials with reinforcements are used in many industries. With the aim to additionally improve some of their properties, especially their tribological properties, several solid lubricants are used in the process of composite production. This paper gives an overview of investigations and possibilities of solid lubricant particles (such as graphite) applying as complementary material, mainly for aluminium base composites that are nowadays common in use in automotive and aeronautics industry.
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Akinwamide, Samuel Olukayode, Serge Mudinga Lemika, Babatunde J. Obadele, Ojo Jeremiah Akinribide, Oluwasegun Eso Falodun, Peter Apata Olubambi, and Bolanle Tolulope Abe. "A Nanoindentation Study on Al (TiFe-Mg-SiC) Composites Fabricated via Stir Casting." Key Engineering Materials 821 (September 2019): 81–88. http://dx.doi.org/10.4028/www.scientific.net/kem.821.81.
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The limitations of aluminium in most engineering applications has led to the development of aluminium matrix composites with improved microstructural and mechanical properties. Nanoindentation techniques was used in assessing the mechanical properties of fabricated aluminium matrix composites with ferrotitanium and silicon carbide as reinforcements. Results from nanoindentation experiments shows the dependence of modulus of elasticity, microhardness and contact depth on the dispersion of ferrotitanium and silicon carbide reinforcements within the aluminium matrix. Highest nanohardness value was observed in composite with 7 wt. % silicon carbide, while the lowest elastic modulus was recorded in as-cast aluminium. Further analysis of specimens confirmed a decrease in maximum penetration depth with respective increase in the addition of silicon carbide reinforcements in the fabricated composites.
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Gajewska, Marta, Jan Dutkiewicz, Lidia Lityńska-Dobrzyńska, and Jerzy Morgiel. "TEM Investigation of Metal/Ceramic Interfaces in AA7475/AlN or Al2O3 Nano-Composites." Solid State Phenomena 186 (March 2012): 202–5. http://dx.doi.org/10.4028/www.scientific.net/ssp.186.202.
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Microstructure of two types of 7475 aluminum alloy matrix composites with additions of 10 wt.% and 20 wt.% of Al2O3 or AlN were investigated. Pre-alloyed 7475 aluminum powders were mixed with ceramic particles and milled in a high energy planetary Fritsch ball mill for up to 40h. Subsequently, it was compacted at 380°C/600 MPa. The microstructure of the obtained composites was studied using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The performed investigations proved that both types of composites show a good dispersion of ceramic phases. The composite matrix was characterized by fine grain size, i.e. less than 100 nm and contained a high density of even smaller, Zn, Cu or Fe rich precipitates. The EDS chemical analysis indicated local presence of MgO at the metal/ceramic interfaces in both types of composites. The presented approach allowed to produce a composite with AlN or Al2O3 particles in nano-crystalline aluminium alloy matrix.
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Suraya, Sulaiman, Shamsuddin Sulaiman, Ali Munira, and Abdul Aziz Fazilah. "Effect of TiC Particulates on the Microstructure and Mechanical Properties of Aluminium-Based Metal Matrix Composite." Advanced Materials Research 903 (February 2014): 145–50. http://dx.doi.org/10.4028/www.scientific.net/amr.903.145.
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In this research, metal-matrix composites (MMCs) of aluminium-11.8% silicon alloy matrix reinforced with titanium carbides particulates were fabricated by the casting technique. Aluminium-11.8% silicon alloy is selected as the matrix material and titanium carbide as particulates are mixed in different weight percentages, 5%, 10%, 15% and 20%wt. The cylinder composite castings are made by pouring the composite mixture in copper permanent-molds. The microstructure and mechanical properties of these composite materials were investigated. The effects of reinforced materials on weight percentages addition of particulate on the particulate distribution in aluminium-11.8% silicon alloy composites and SEM observation of the fracture surfaces of tensile tested specimens were deliberate. Moreover, cylinder castings without particulate addition are made and compared with the result based on the properties and microstructural features. It is found that the microstructure and mechanical properties of composites significantly improved by the use of particle reinforced into aluminium alloy.
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S., Babu, Arun Prasad S., and Paul Gregory F. "Applicability of Boron Carbide Reinforced Aluminium 7075 Composites for Aircraft Wings and Engines." International Journal of Advance Research and Innovation 8, no. 2 (2020): 125–29. http://dx.doi.org/10.51976/ijari.822022.
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It has become a prerogative of any industry to aim for lightweight materials, having promising strength for all of its major applications. Right from car manufacturers, aiming to incorporate lightweight materials, to substantial Space Research organizations, also aiming to reduce their functional weight, every organization puts forth voluminous efforts to achieve this goal. In such a scenario, Aluminium 7075 and Boron Carbide composites are found to be promising. This article briefs an experimental observation using these Aluminum-Boron Carbide composites which were synthesized using stir casting technique with varying particulate weight fraction (3%, 6%, and 9%). The experimental observation yielded promising outcomes of using this composite for lightweight applications. The composites are found to have greater strength and better weight ratio and are conveniently suitable for lightweight applications. This research work proposes this composite be applied in aircraft wings and engine.
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Marzuki, Haslan Fadli Ahmad, Mawarni Mohamad, Engku Ahmadhilmi Engku Ubaidillah, Mohd Nasha’ain Nordin, Mohd Fadzlee Zainal Abidin, Norazlan Roslani, Yusli Mohamad Junos, Salleh Omar, and Mariatti Jaafar. "Effect of Anodizing on Strength of Carbon-Fibre Aluminium-Laminated Composites." Advanced Materials Research 748 (August 2013): 216–21. http://dx.doi.org/10.4028/www.scientific.net/amr.748.216.
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Fibre-metal-laminated composites that consist of aluminium and carbon fibre/epoxy was widely use in engineering fields such as in aerospace and civil application. An issue arise for this laminate systems is that aluminium surfaces must be treated to ensure the effectiveness of load transfer mechanism in the interfacial region. In this research, the effect of anodized layer on the aluminium surface towards strength of the carbon fibre-aluminium-laminated composites was studied. Aluminium 6061-T6 was anodized using phosphoric acid as electrolyte and different anodizing voltage to produce different surface morphology. The surface roughness and morphology were determined via Atomic Force Microscopy and its wettability was determined by Static Contact Angle. Then, anodized aluminium was laminated with carbon fibre/epoxy system via vacuum bagging techniques. It shows that the strength of laminated composite with anodized surface increases up to 26% compared to laminates without anodized surfaces. Furthermore, the failure mechanism of laminated composite with anodized surface resulted in partial adhered failure instead of adhesive failure. These show that anodized surfaces contributes to the effectiveness of load transfer mechanism in fibre-metal-laminates composites.
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Faisal, M. H., and S. Prabagaran. "Micro structural and static structural analysis of LM6/B4C and LM6/B4C/GR hybrid aluminium metal matrix composites." International Journal of Engineering & Technology 7, no. 1.1 (December 21, 2017): 37. http://dx.doi.org/10.14419/ijet.v7i1.1.8919.
Full textAbstract:
This research work was performed to interpret the fabrication and mechanical characteristics of LM6/B4C and LM6/B4C/Gr aluminium matrix composites. The aluminium matrix composites were manufactured by reinforcing B4C particles with varying wt % of 3, 5, 7 using stir casting technique. LM6/B4C 7% composite was made hybrid by adding 2% Graphite into it. The presence of graphite in such composites provide the self-lubricating effect, replacing conventional sliding contacts (bearings, sheaves, pistons, pulleys) with them. This also helps to reduce the lubricating oil and fuel consumption along with environmental benefits reducing energy wastage in industrial and automotive components. The properties of the composites were collated with the base alloy to analyse the enhancement in mechanical characteristics that had been transmitted by the reinforcement particles to the composites. The specimen microstructure was inspected using an optical microscope to ensure the uniform distribution of reinforcement particles in the matrix. The piston was modelled in CREO and using ANSYS 14.5 workbench static structural analysis of LM6 alloy, LM6/B4C composite and LM6/B4C/Gr hybrid aluminium composites are executed. Compared to LM6 alloy, better static structural properties were obtained in composites and hybrid composite.