Journal articles: 'Aluminum matrix composites'

1

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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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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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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Wu, Hao, and Sen Yang. "Research and Prospect of Diamond/Aluminum Matrix Composites." Key Engineering Materials 871 (January 2021): 211–15. http://dx.doi.org/10.4028/www.scientific.net/kem.871.211.

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Diamond/aluminum matrix composite with high thermal conductivity is of great significance to solve the heat dissipation problem of large-scale integrated circuits and high-power components. This paper reviews the current research status of diamond/aluminum matrix composites, and analyzes the effects of the preparation and processing of the composites, the interface bonding between diamond and aluminum matrix, the reinforced diamond and matrix alloy elements on the properties of the composites.

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Zhiming, Yang, Liu Jinxu, Feng Xinya, Li Shukui, Xu Yuxin, and Ren Jie. "Investigation on mechanical properties and failure mechanisms of basalt fiber reinforced aluminum matrix composites under different loading conditions." Journal of Composite Materials 52, no. 14 (September 28, 2017): 1907–14. http://dx.doi.org/10.1177/0021998317733807.

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Basalt fiber reinforced aluminum matrix composites with different fiber contents (i.e. 0 wt%, 10 wt%, 30 wt% and 50 wt%) were prepared by hot-press sintering. Microstructure analysis indicates that basalt fibers are uniformly distributed in 10% basalt fiber reinforced aluminum matrix composite. The interfacial bonding between basalt fibers and aluminum matrix is good, and there is no interface reaction between basalt fiber and aluminum matrix. Quasi-static tensile, quasi-static compression and dynamic compression properties of basalt fiber reinforced aluminum composites were studied, and the influences of basalt fiber content on mechanical properties were discussed. Meanwhile, the failure mechanisms of basalt fiber reinforced aluminum matrix composites with different fiber content were analyzed.

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Brinkman, H. J., J. Duszczyk, and L. Katgerman. "Reactive hot pressing of aluminum matrix composites." Journal of Materials Research 14, no. 11 (November 1999): 4246–50. http://dx.doi.org/10.1557/jmr.1999.0575.

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A method is described for the production of dense aluminum matrix composites from elemental powders in one processing step by reactive hot pressing (RHP). It encompasses both the exothermic conversion of reactants to composite product and the following hot compaction of the porous composite product. The RHP method described in this paper takes into account the gas evolution accompanying the exothermic process, ensures complete conversion of reactants, and avoids adverse reactions between aluminum matrix and graphite tooling material. In situ sample temperature measurements enable proper process control, in particular the timing of the full densification step of the hot reaction product.

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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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Niu, Ji Tai, Zeng Gao, Dong Feng Cheng, Xi Tao Wang, and Si Jie Chen. "Welding of Aluminum Matrix Composites." Materials Science Forum 762 (July 2013): 476–82. http://dx.doi.org/10.4028/www.scientific.net/msf.762.476.

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Aluminum metal matrix composites (Al-MMCs) are new promising materials for aviation, aerospace and automotive industries. However, due to the poor weldability they have very limited applications. In this paper, the authors present the welding achievements of Al-MMCs developed by their scientific research team in recent years. Laser welding, liquid phase impact diffusion welding and vacuum brazing were utilized. Based on analysis of microstructure, good joints can be achieved by using these welding methods.

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9

Hunt, Jr., Warren H. "Aluminum Metal Matrix Composites Today." Materials Science Forum 331-337 (May 2000): 71–84. http://dx.doi.org/10.4028/www.scientific.net/msf.331-337.71.

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Nishida, Yoshinori, Norihisa Izawa, and Yukio Kuramasu. "Recycling of aluminum matrix composites." Metallurgical and Materials Transactions A 30, no. 3 (March 1999): 839–44. http://dx.doi.org/10.1007/s11661-999-0077-x.

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Girot, Franck A., J. M. Quenisset, and R. Naslain. "Discontinuously-reinforced aluminum matrix composites." Composites Science and Technology 30, no. 3 (January 1987): 155–84. http://dx.doi.org/10.1016/0266-3538(87)90007-8.

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12

Wendt, R. G., W. C. Moshier, B. Shaw, P. Miller, and D. L. Olson. "Corrosion-Resistant Aluminum Matrix for Graphite-Aluminum Composites." CORROSION 50, no. 11 (November 1994): 819–26. http://dx.doi.org/10.5006/1.3293472.

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13

Sulardjaka, Sri Nugroho, Suyanto, and Deni Fajar Fitriana. "Investigation of Mechanical Properties of Al7Si/ SiC and Al7SiMg/SiC Composites Produced by Semi Solid Stir Casting Technique." MATEC Web of Conferences 159 (2018): 02036. http://dx.doi.org/10.1051/matecconf/201815902036.

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Mechanical characteristic of silicon carbide particle reinforced aluminum matrix composites produced by semi solid stir casting technique was investigated. Al7Si and Al7SiMg were used as metal matrix. High purity silicon carbida with average particle size mesh 400 was used as reinforcement particle. Aluminum matrix composites with variation of SiC: 5 %, 7.5 % and 10 % wt were manufactured by the semi solid stir casting technique. Stiring process was performed by 45 ° degree carbide impeller at rotation of 600 rpm and temperature of 570 °C for 15 minutes. Characteritation of composites speciment were: microscopic examination, density, hardness, tensile and impact test. Hardness and density were tested randomly at top, midlle and bottom of composites product. Based on distribution of density, distribution of hardness and SEM photomicrograph, it can be concluded that semisolid stir casting produces the uniform distribution of particles in the matrix alloy. The results also indicate that introducing SiC reinforcement in aluminum matrix increases the hardness of Al7Si composite and Al7SiMg composite. Calculated porosities increases with increasing wt % of SiC reinforcements in composite. The addition of 1 % Mg also increases the hardness of composites, reduces porosities of composite and enhances the mechanical properties of composites.

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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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Zhu, Wan Bo, Zheng Gui Zhang, Hao Nan Chen, and Tie Xiao. "Review and Outlook of Aluminum Matrix Composites." Materials Science Forum 984 (April 2020): 119–24. http://dx.doi.org/10.4028/www.scientific.net/msf.984.119.

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In the past 20 years, the development of aluminum matrix composites (AMCs) has made a qualitative leap. This article comprehensively introduces the performance characteristics and the preparation methods of aluminum matrix composites. The powder metallurgy method (P/M) is elaborated in detail. And the applications of aluminum matrix composites in aerospace, automobile and other fields are described. Finally, the future development of aluminum matrix composites is prospected.

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Ouyang, Qiu Bao, Rui Xiang Li, Wen Long Wang, Guo Ding Zhang, and Di Zhang. "Light Weight and High Modulus Aluminum Matrix Composite and its Application into Aerospace." Materials Science Forum 546-549 (May 2007): 1551–54. http://dx.doi.org/10.4028/www.scientific.net/msf.546-549.1551.

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Compared to the conventional constructive materials, SiC particle reinforced aluminum matrix composites have lighter weight and higher specific modulus, and are applied in the structure framework of solar battery array for space station. According to the requests of the material properties for this framework, aluminum matrix composites are specially designed and manufactured, and then deformed into components of different shapes and sizes for various uses. The composite components were of compact structure and excellent mechanical properties, and had passed all the application tests for the framework. The application of aluminum matrix composites achieves a good result that not only the framework weight was greatly reduced but also the comprehensive properties of the framework were improved greatly. Aluminum matrix composites exhibit a great potential for further application into aerospace.

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Zhu, De Zhi, Wei Ping Chen, and Yuan Yuan Li. "Strain-Rate Relationship of Aluminum Matrix Composites Predicted by Johnson-Cook Model." Materials Science Forum 704-705 (December 2011): 935–40. http://dx.doi.org/10.4028/www.scientific.net/msf.704-705.935.

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Strain-rate sensitivities of 55-65vol.% aluminum 2024-T6/TiB2composites and the corresponding aluminum 2024-T6 matrix were investigated using split Hopkinson pressure bar. Results showed that 55-65vol.% aluminum 2024-T6/TiB2composites exhibited significant strain-rate sensitivities, which were three times higher than that of the aluminum 2024-T6 matrix. The strain-rate sensitivity of the aluminum 2024-T6 matrix composites rose obviously with reinforcement content increasing (up to 60%), which agreed with the previous researches. The aluminum 2024-T6/TiB2composites showed hybrid fracture characteristics including particle cracking and aluminum alloy softening under dynamic loading. The flow stresses predicted by Johnson-Cook model increased slowly when the reinforcement volume fraction ranged in 10%-40%. While the reinforcement volume fraction was over 40%, the flow stresses of aluminum matrix composites increased obviously and the strains dropped sharply. Keywords: Composite materials; Dynamic compression; Stress-strain relationship

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18

Jiao, Lei, Yu Tao Zhao, Yue Wu, Sai Zhang, and Xiao Lu Wang. "Microstructure of In Situ Synthesized Al3ti/6063 under Combination of Magnetic Fields." Advanced Materials Research 600 (November 2012): 199–203. http://dx.doi.org/10.4028/www.scientific.net/amr.600.199.

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During the process of in situ generated particles reinforced aluminum matrix composites, the introduction of the magnetic field can make the melt a forced movement, promoting changes in the conditions of melt dynamics, and thus plays the role in refining particles, changing the morphology and distribution. And particle size and distribution both are important factors affecting mechanical properties of the composite. Therefore, the introduction of the magnetic field can effectively improve the performance of composite materials. In this experiment, Al-K2TiF6 is used as reaction system to study the influence of combined rotating magnetic field on the microstructure of aluminum matrix composites, which can optimize the preparation process of aluminum matrix composites in the combined magnetic field.

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Senthilkumar, R., N. Arunkumar, and M. Manzoor Hussian. "Effects of Micro and Nano-Size Al₂O₃ Particle Reinforcement on Mechanical Behaviour of Extruded Aluminum Alloy Matrix Composite." Applied Mechanics and Materials 787 (August 2015): 617–21. http://dx.doi.org/10.4028/www.scientific.net/amm.787.617.

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Aluminum alloy (AA2014) matrix composites reinforced by different weight percentage of aluminum oxide (Al2O3) in micro and nano sizes were fabricated through powder metallurgy route followed by hot extrusion process. Seven different aluminium composites with varying percentages of nano and micron sized alumina particles varying from 1% to 10% were evaluated in addition to monolithic alloy. The microstructure of nano-composite and monolithic alloys were examined by optical microscope and scanning electron microscope (SEM) equipped with an energy dispersive X-ray analysis (EDAX). In addition, the effects of weight fraction of the reinforcement matrix on mechanical properties were evaluated. The results have indicated that, a significant improvement in hardness of the nano composite was found in case of nano-composite with 8% of micro Al2O3 and 2% of nano Al2O3 particles by the addition of reinforcement.

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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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Choi, Hyunjoo, Jaehyuck Shin, Byungho Min, Junsik Park, and Donghyun Bae. "Reinforcing effects of carbon nanotubes in structural aluminum matrix nanocomposites." Journal of Materials Research 24, no. 8 (August 2009): 2610–16. http://dx.doi.org/10.1557/jmr.2009.0318.

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The reinforcing effects of carbon nanotubes (CNTs) are investigated for aluminum matrix composites. The composites present a strong bonding between CNTs and the aluminum matrix using a controlled mechanical milling process, producing a network structure of aluminum atoms around CNTs. At the same time, CNTs that are dispersed during the milling process can be located inside aluminum powders, thereby providing an easy consolidation route via thermomechanical processes. A composite containing 4.5 vol% multiwalled CNTs exhibits a yield strength of 620 MPa and fracture toughness of 61 MPa·mm1/2, the values of which are nearly 15 and seven times higher than those of the corresponding starting aluminum, respectively.

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Bannaravuri, Praveen Kumar, and Anil Kumar Birru. "Strengthening of Al-4.5%Cu alloy with the addition of Silicon Carbide and Bamboo Leaf Ash." International Journal of Structural Integrity 10, no. 2 (April 8, 2019): 149–61. http://dx.doi.org/10.1108/ijsi-03-2018-0018.

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Purpose The purpose of this paper is to determine the use of BLA along with SiC as economical reinforcements to enhance the mechanical behavior of hybrid composite. The purpose of this research is the development of cost-effective aluminum hybrid metal matrix composites. Design/methodology/approach The present research work investigation evaluated the mechanical properties of Al-4.5%Cu alloy, Al-4.5Cu/10SiC, Al-4.5Cu/10SiC/2BLA and Al-4.5Cu/10SiC/4BLA composites by the Stir casting method. The fabricated composites were analyzed using optical microscopy (OM), scanning electron microscopy (SEM), and hardness and tensile test. Findings The microstructure modification with the addition of reinforcement particles in the matrix alloy and clear interface in between matrix and particles are observed. The density of the composite increased with the addition of SiC and decreased with the addition of BLA in comparison with that of matrix alloy. The hardness and tensile strength of the single-reinforced composite and hybrid composites improved with the addition of reinforcement particles. The strengthening of composites was due to load-bearing capacity of reinforcement particles over the matrix alloy and increased dislocation density of composites materials. The tensile failure mechanism of the composites is reveled with SEM analysis. Practical implications The papers reports the development of cost-effective and light weight aluminum hybrid composites with remarkable enhancement in the mechanical and tribological properties with the addition of BLA as economical reinforcement along with SiC. Originality/value The density, hardness and tensile values of fabricated aluminium composites were presented in this paper for the use in the engineering applications where the weight and cost are consider as a primary factors.

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Hammad, A. E., M. Amin, M. Ragab, and Yasser M. R. AboelMagd. "Study The Properties of Sintered Al-Composites Matrix Reinforced With Nano-Al Oxide And/Or Carbon Nano Tubes." JOURNAL OF ADVANCES IN PHYSICS 14, no. 3 (October 3, 2018): 5741–52. http://dx.doi.org/10.24297/jap.v14i3.7602.

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The present work is concerned with studying the synthesis and characterization of hybrid aluminum bronze matrix strengthened with nano-aluminum oxide particles (n-Al2O3), and carbon nano tubes (CNTs). The selected matrix composite was successfully incorporated with different weighted percentages of CNTs (i.e. 1.0 and 2.0 wt.%) and/or n-Al2O3 (i.e. 1.0 and 2.0 wt.%) by sintering process. From the microstructure analysis, n- Al2O3 particles was dispersed uniformly and holding over the surface of aluminum bronze. Furthermore, some agglomeration was found due to reinforced CNTs into aluminum bronze matrix. From hardness tests, it was found that incorporated n- Al2O3 and CNTs into matrix increased the hardness of composites to be equal 230 HV, which is around 2.3 times higher than that of an aluminum bronze matrix. Moreover, the wear loss of CNTs - Al2O3/aluminum bronze composites diminished because of the impact of homogeneous circulation of CNTs in aluminum bronze and low corrosion coef?cient of uncovered CNTs on the well-used surface. Notable from the results, the electrical resistivity of the hybrid composites are lower than the matrix. Hopefully, the findings are expected to provide profound knowledge and further reference towards the studied composites of the miniaturised electronic package

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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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KOHARA, Shiro. "Fabrication methods for aluminum matrix composites." Journal of Japan Institute of Light Metals 40, no. 9 (1990): 703–11. http://dx.doi.org/10.2464/jilm.40.703.

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Hihara, L. H., and R. M. Latanision. "Galvanic Corrosion of Aluminum-Matrix Composites." CORROSION 48, no. 7 (July 1992): 546–52. http://dx.doi.org/10.5006/1.3315972.

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Kobashi, Makoto, Naoki Takata, and Asuka Suzuki. "Reactive processing of aluminum matrix composites." Journal of Japan Institute of Light Metals 67, no. 11 (2017): 571–75. http://dx.doi.org/10.2464/jilm.67.571.

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Mohammed, Sohail M. A. K., and Daolun L. Chen. "Carbon Nanotube‐Reinforced Aluminum Matrix Composites." Advanced Engineering Materials 22, no. 4 (December 27, 2019): 1901176. http://dx.doi.org/10.1002/adem.201901176.

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Chen, Yijin, D. V. Vinogradov, and S. V. Kurganov. "Cutting properties of aluminum matrix composites." Journal of Physics: Conference Series 1990, no. 1 (August 1, 2021): 012007. http://dx.doi.org/10.1088/1742-6596/1990/1/012007.

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Zhang, Xue Xi, Yong Bing Shen, Chun Feng Deng, De Zun Wang, and Lin Geng. "Preparation of Novel Aluminum Hybrid Composite Containing Aluminum Borate Whiskers and Carbon Nanotubes." Key Engineering Materials 353-358 (September 2007): 1414–17. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.1414.

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It is attractive to use multi-wall carbon nanotubes (MWNTs), which has a high modulus and strength, to enhance the properties of metal matrix composites by hybrid strategy. In this paper, novel aluminum borate whisker (ABOw) and MWNTs hybrid composites were prepared by squeeze cast technique and the properties were investigated. The results show that hybrid preforms may be made by co-deposition of ABOw and MWNTs in a solution by wet method. MWNTs separate the ABOw from whisker-to-whisker contact and decrease the compressive deformation of the hybrid preforms during squeeze cast processing. MWNTs distribute along mainly in the grains of aluminum matrix, making the mechanical properties of the hybrid composites higher than singularly reinforced composite.

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Jiang, Long Tao, Gao Hui Wu, Min Zhao, Qiang Zhang, Norio Kouno, and Hideo Saito. "Effects of Particle Size on Microstructure of the Matrix Alloy in Aluminum Matrix Composites." Materials Science Forum 546-549 (May 2007): 1655–59. http://dx.doi.org/10.4028/www.scientific.net/msf.546-549.1655.

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Aluminum matrix composites, reinforced by 0.15μm and 5μm Al2O3 particles with 40% volume fractions were fabricated by squeeze casting technique. The microstructure characterization near the interfaces of Al2O3p/1070Al composites was investigated by SADP and HREM techniques. Results showed that high-density dislocations were generated in the 5μm-Al2O3p/Al composite due to the thermal mismatch stress. In contrast, the matrix of the 0.15μm-Al2O3p/Al composite appeared to be nearly free dislocations and some “micro distortion areas” of 1-5nm were observed, which was attributed to the dispersion of fine sub-micron particles and uniform distribution of the stress near the interfaces.

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Shrivastava, Anil K., Kalyan K. Singh, and Amit R. Dixit. "Tribological properties of Al 7075 alloy and Al 7075 metal matrix composite reinforced with SiC, sliding under dry, oil lubricated, and inert gas environments." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 232, no. 6 (August 18, 2017): 693–98. http://dx.doi.org/10.1177/1350650117726631.

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Tribological properties of silicon carbide-based aluminum metal matrix composite and aluminum matrix alloy have been studied for various sliding speeds of 3.14 and 3.77 m/s and load range from 10 to 30 N under dry, lubricated, and inert gas (argon) environment. Pin-on-disk tribometer were used for experiments. The composite was fabricated by stir casting route by using aluminum 7075 alloy as the matrix and 10% by weight silicon carbide as reinforced material. Results have revealed that the value of coefficient of friction is found to be maximum in case of inert condition in matrix alloy at sliding speed 3.77 m/s and minimum in case of lubricated condition in composite at sliding speed 3.14 m/s. The wear rate is least for both the alloy and the composite under lubricated condition compared with dry and inert condition. Wear rate increases with the normal load and sliding speed and it is maximum in inert condition of matrix alloy at 30 N. Uniform distribution of silicon carbide in aluminum matrix alloy reduces the values of coefficient of friction and wear rate for composites compared to aluminum matrix alloy under dry, lubricated, and inert condition which increases the life of the composites for longer duration. Silicon carbide significantly improves the strength the aluminum matrix alloy in dry, lubricated, and inert condition and acts as load-bearing members.

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Mohanavel, V., K. Rajan, and K. R. Senthil Kumar. "Study on Mechanical Properties of AA6351 Alloy Reinforced with Titanium Di-Boride (TiB₂) Composite by In Situ Casting Method." Applied Mechanics and Materials 787 (August 2015): 583–87. http://dx.doi.org/10.4028/www.scientific.net/amm.787.583.

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In the present study, an aluminum alloy AA6351 was reinforced with different percentages (1, 3 and 5 wt %) of TiB2 particles and they were successfully fabricated by in situ reaction of halide salts, potassium hexafluoro-titanate and potassium tetrafluoro-borate, with aluminium melt. Tensile strength, yield strength and hardness of the composite were investigated. In situ reaction between the inorganic salts K2TiF6 and KBF4 to molten aluminum leads to the formation of TiB2 particles. The prepared aluminum matrix composites were characterized using X-ray diffraction and scanning electron microscope. Scanning electron micrographs revealed a uniform dispersal of TiB2 particles in the aluminum matrix. The results obtained indicate that the hardness and tensile strength were increased with an increase in weight percentages of TiB2 contents.

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Li, Xuan, Yongzhe Fan, Xue Zhao, Ruina Ma, An Du, Xiaoming Cao, and Huiyun Ban. "Damping Capacity and Storage Modulus of SiC Matrix Composites Infiltrated by AlSi Alloy." Metals 9, no. 11 (November 7, 2019): 1195. http://dx.doi.org/10.3390/met9111195.

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In this paper, we describe how an aluminum alloy-reinforced silicon carbide ceramic matrix composite (SiCCMC) with excellent damping capacity and storage modulus was fabricated by infiltration. The effects of silicon (Si) on the microstructure and damping capacity of the composite were studied. The interface bonding and damping mechanism involved were also discussed. The results show that composites with high damping capacity can be obtained by infiltrating SiC ceramics with aluminum alloy. The residual Si in the SiC ceramic had little effect on the damping capacity, and it provided the passage of aluminum alloy into the interior of the SiC ceramic. The aluminum atoms penetrate the SiC particles by diffusion. Optimal composite damping capacity was obtained when the Si content in the aluminum alloy was 15 wt. %, because the AlSi/SiC interface friction dissipated most of thermal energy. Ti3SiC2 formed on the surface had little effect on the damping capacity. Additionally, by changing the Si content in the aluminum alloy, the strength and damping capacity of the composites can be controlled.

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FUKUMOTO, I., S. MEKARU, S. SHIBATA, and K. NAKAYAMA. "MMC-08: Fabrication of Composite Material Using Alumina Agglomerated Sludge and Aluminum Powder by Spark Plasma Sintering(MMC-II: METALS AND METAL MATRIX COMPOSITES)." Proceedings of the JSME Materials and Processing Conference (M&P) 2005 (2005): 9. http://dx.doi.org/10.1299/jsmeintmp.2005.9_3.

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Naeem, Haider Tawfiq, and Firas Fouad Abdullah. "Effects of garnet particles and chill casting conditions on properties of aluminum matrix hybrid composites." Eclética Química Journal 44, no. 2 (April 25, 2019): 45. http://dx.doi.org/10.26850/1678-4618eqj.v44.2.2019.p45-52.

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In recent years, the demand of high-performance and light-weight materials was increasing for industrial applications. The present research aims to study microstructural and mechanical properties of aluminum matrix hybrid reinforced 6-12 wt.% of garnet under the effects of materials chill casting during the manufacturing aluminum matrix composite. In this research work, metallic mold and no chills were used. In order to evaluate the quality of the chill end casting microstructure, hardness, and tensile tests were conducted on the prepared composite specimens. Aluminum matrix composites underwent the chill casting process have been examined using the optical microscope, scanning electron microscopy and X-ray diffraction. Microstructure outcomes of the casted Al-composites alloy indicated that having precipitations (Al2Si, AlCuMg2Si) and Garnet particulates hard within the Al-matrix. The results showed that the copper chill casting is the better one in terms of improving the mechanical properties because of its high volumetric heat capacity. Aluminum composite with addition of 9% Garnet composite produced via copper chill casting exhibits better mechanical properties.

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Wycliffe, Paul. "Galling in aluminum alloys and Duralcan aluminum matrix composites." Wear 162-164 (April 1993): 574–79. http://dx.doi.org/10.1016/0043-1648(93)90543-u.

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Pasha, Mudasar B. A., and Mohammed Kaleemulla. "Processing and Characterization of Aluminum Metal Matrix Composites: An Overview." REVIEWS ON ADVANCED MATERIALS SCIENCE 56, no. 1 (May 1, 2018): 79–90. http://dx.doi.org/10.1515/rams-2018-0039.

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Abstract An increased interest is observed in recent years in the processing of aluminum metal matrix composites (AMMCs) due to their remarkable properties such as light in weight, very high strength, environmental resistance, corrosion resistance, and low thermal coefficient of expansion compared to conventional metal and alloys. This leads to superior compressive strength, for fuel cell applications, low density and low cost for automotive and small engine applications. Homogeneous distribution of the reinforcement phase in turns improves hardness and ultimate tensile strength for lightweight applications, especially aeronautical and high-speed train industries. Uniform distribution of reinforcement directly influences properties and quality of the composite material. And develop a conventional low-cost method of producing metal matrix composites to obtain a homogenous dispersion of reinforcing materials. In this review article, processing and characterization of aluminum metal matrix composites have been reviewed. The Point of convergence is given to the new fabrication techniques, their physical and mechanical characterization. Substantially this review article censoriously reviews the present and past state of understanding of the processing of aluminum metal matrix composites with different reinforcement. The resulting failure mechanisms are discussed. Instructions are given to clarify open questions related to the fabrications of aluminum metal matrix composites.

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Jamaludin, Shamsul Baharin, Josef Hadipramana, Mohd Fitri Mohd Wahid, Kamarudin Hussin, and Azmi Rahmat. "Microstructure and Interface Analysis of Glass Particulate Reinforced Aluminum Matrix Composite." Advanced Materials Research 795 (September 2013): 578–81. http://dx.doi.org/10.4028/www.scientific.net/amr.795.578.

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A characterization of microstructure and interface was made on the composites Al-4 % Cu reinforced with 15 wt. % glass particulate. The composite was fabricated by powder metallurgy followed by solution treatment and artificial ageing. The microstructures of the composite showed that the glass particulates were in-homogenously distributed in the matrix and segregated near copper. The aluminum oxide layer was found between aluminum, copper and glass particulate. Micro cracks were observed in the aluminum oxide layer and at the interface between aluminum oxide layer and aluminum. Hardness increased as ageing time increased. Interface behavior and aging time influenced the hardness of the composite.

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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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Rathod, Nishith R., and Jyoti Menghani. "A consequence of reinforcements in aluminum-based metal matrix composites: a literature review." Metallurgical and Materials Engineering 25, no. 3 (October 16, 2019): 195–208. http://dx.doi.org/10.30544/422.

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In the recent era, Metal Matrix Composites (MMCs) are one of the most vigorously studied topics in material science. Lightweight metals and its alloys create an intense attraction for tailoring new metal matrix composites to overcome conventional limitations like low strength. Aluminum metal matrix composites signify to the high-grade lightweight high-performance aluminum-based MMCs. The reinforcements in aluminum matrix composites could be in the form of particulates, whiskers, and continuous fiber or discontinuous fiber, where weight or volume fraction varies from a few percentages to 60%. Properties of aluminum metal matrix composites can be customized as per the demand of the industry by getting the appropriate combination of the metal matrix, reinforcements, and selective processing route. Nowadays many grads of aluminum matrix composites are fabricated by different routes where in situ route processing is more attractive compared with conventional ex-situ process because it delivers excellent wettability, thermally stability of reinforcements, the bonding strength between reinforcements and matrix, cohesive atomic structure, and fine grain size of reinforcements (specifically nano size). The devoted research work of aluminum matrix composites during the last three-decade generates a wealth of knowledge on the effect of reinforcements vis-à-vis mechanical, chemical, tribological properties of aluminum matrix composites. The acceptance of the aluminum matrix composites as engineering materials depends not only on the performance advantages of the composites, but it also depends upon the cheap, easy, and familiar fabrication technologies for these tailored materials.

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Agrianidis, P., T. Agrianidis, K. G. Anthymidis, and A. Trakali. "Mechanical Properties of Aluminum Metal Matrix Composites." Key Engineering Materials 417-418 (October 2009): 341–44. http://dx.doi.org/10.4028/www.scientific.net/kem.417-418.341.

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Aluminum matrix composites reinforced by ceramic particles are well know for their good thermo-physical and mechanical properties. As a result, during the last years, there has been a considerable interest in using aluminum metal matrix composites (MMCs) in the automobile industry. These potential applications have greatly stimulated the tribological studies of MMCs under different operating conditions. In this paper, TiB – particles - reinforced aluminum - tungsten matrix composites were fabricated by the cost – effective squeeze – casting technology and their microstructure characteristics and mechanical properties were investigated. The microstructure observation showed that the produced composites were dense, with no micro-holes and obvious defects. Their wear resistance was evaluated using a pin on disc type equipment under dry wear conditions and found significantly increased compared to pure Al metal.

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Sui, Xiao Ming, Xi Liang Xu, Xiao Meng Zheng, Guang Zhi Xu, and Qiang Wang. "Preparation and Characterization of Carbon Fibre Reinforced Aluminium Matrix Composite." Materials Science Forum 686 (June 2011): 758–64. http://dx.doi.org/10.4028/www.scientific.net/msf.686.758.

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Driven by the increasing requirements from aircraft producers, aluminium alloy matrix composites with carbon fiber reinforcement have been largely used in the modern industry. The method of traditional preparation of carbon fiber reinforced aluminum matrix composites is not only high cost and complex to produce but also difficult to apply in the civilian. The present paper focuses on exploratory study on the preparation of carbon-fiber- reinforced aluminum composites, the intensifying material is continuous long carbon fiber. In order to avoid any interfacial reactions in the carbon fiber reinforced composites, the carbon fibers were coated with copper. We made The tensile samples were made by using the mould, the tensile properties determined, the strengthening mechanism studied, and the carbon fiber in the matrix observed with the microscope.

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Castillo-Robles, José A., Alicia P. Dimas-Muñoz, José A. Rodríguez-García, Carlos A. Calles-Arriaga, Eddie N. Armendáriz-Mireles, Wilian J. Pech-Rodríguez, and Enrique Rocha-Rangel. "Mechanical and Microstructural Response of Aluminum Composites Reinforced with Ceramic Micro-Particles." Journal of Composites Science 5, no. 9 (August 27, 2021): 228. http://dx.doi.org/10.3390/jcs5090228.

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Aluminum matrix composites have recently taken an important role in advanced applications because they have a good combination of physical and chemical properties. For this reason, in this work, aluminum composites, with additions of ceramic particles (mullite or tungsten carbide), were manufactured in order to determine the effect of those particles on the mechanical properties and microstructure of aluminum. The manufacture of the composites was carried out by means of powder metallurgy. We studied composites with additions of 0.5 and 1 vol.% of the respective ceramic. Composites were sintered at 580 and 601 °C, which corresponds to 88 and 91% of the melting point of aluminum, respectively. Observations in SEM, together with EDX analysis, confirm that mullite particles are located at intragranular and transgranular positions of the aluminum matrix, while tungsten carbide particles were found mostly at intragranular areas of the matrix. From the analysis of the studied ceramics, it was found that with the use of mullite, there are greater improvements in the hardness and elastic modulus of the manufactured composite.

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Suárez, Oscar Marcelo, Natalia Cortes-Urrego, Sujeily Soto-Medina, and Deborah Marty-Flores. "High-temperature mechanical behavior of Al-Cu matrix composites containing diboride particles." Science and Engineering of Composite Materials 21, no. 1 (January 1, 2014): 29–38. http://dx.doi.org/10.1515/secm-2013-0020.

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AbstractAn aluminum-copper matrix composite reinforced with aluminum diboride particles was studied at high temperature via thermomechanometry experiments. The matrix contained 2 wt% Cu, whereas the amount of boron forming AlB2 ranged from 0 to 4 wt%, i.e., 0 to 8.31 vol% of diboride particles. In the first segment of the research, we demonstrated that larger amounts of AlB2 particles raised the composite hardness even at 300°C. To assess the material creep behavior, another set of specimens were tested under 1 N compression at 400°C and 500°C for 12 h. Higher levels of AlB2 allowed the composites to withstand compression creep deformations at those temperatures. By using existing creep models developed for metal matrix composites we were able to determine that viscous slip deformation was the dominant deformation mechanism for the temperatures and stress levels used in our experiments. Additionally, the computed creep activation energy for these aluminum matrix composites were found comparable to the energies reported for other similar materials, for instance, Al/SiCp composites.

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Mohanavel, V., K. Rajan, S. Karthikeyan, M. Naveen Kumar, and K. Yoganandam. "Investigation of Mechanical and Tribological Behaviour of Dual Particles Reinforced Al Matrix Composites." Applied Mechanics and Materials 852 (September 2016): 422–27. http://dx.doi.org/10.4028/www.scientific.net/amm.852.422.

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In the present scenario, dual particles reinforced aluminum matrix composites have a vast number of applications in aerospace, marine, transportation, structural and non-structural applications like drive shaft, connecting rod, piston and brake drum. The main objective of this work is for evaluating the mechanical and the tribological behavior of aluminium oxide and graphite particulate reinforced with AA6351 composites were prepared by liquid metallurgy route (Stir casting). Hardness and tensile strength of the composite and the base alloy were investigated. The microstructure of manufactured composite and the base alloy were examined by an optical microscope. Optical microscopy analysis confirmed the nearly uniform distribution of Al2O3/Gr twin particles in Al matrix. The tensile strength and hardness of the composites have significantly improved by the presence of Al2O3/Gr.

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Peter, Ildiko, Raluca Maria Florea, Oana Bălţătescu, and Ioan Carcea. "Growth of AlN by Reactive Gas Injection of Nitrogen in an AlMg Matrix." Advanced Materials Research 1036 (October 2014): 117–21. http://dx.doi.org/10.4028/www.scientific.net/amr.1036.117.

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The primary objective of the present research was to provide a fundamental understanding of the processing science necessary to fabricate the Aluminum Nitride (AIN) reinforced Aluminum-Magnesium (AIMg) composites via Reactive Gas (N2) Injection in the AIMg alloy melt. Aluminum nitride (AlN) matrix composites were prepared by a novel approach. It was possible to produce a considerable amount of AIN particles in the AI alloy matrix at a reaction temperature as low as 900 °C utilizing the in-situ nitration reaction process developed in the present study. The volume fraction of AIN increases almost linearly with increasing the magnesium (Mg) content in the alloy and the reaction time. The shapes of AIN particles were found to have different forms, whose sizes were in the range from submicron to a few microns. From the present study, it is concluded that the new innovative in-situ nitridation process developed in the present study can be successfully applied for processing of high strength AIMg/AIN composites. For particles and composite structure characterization some methods were used, including: scanning microscopy, quantitative analysis of selected composite regions and XRD analyses. Composite structure and reinforcement distribution was compared with use of quantitative analysis. Morphology and diffraction pattern of aluminum nitride particles was shown. Typical structure of studied composites with microanalysis results was indicated. Aluminum nitride dispersion change was represented.

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Okabe, T., M. Nishikawa, Nobuo Takeda, and Hideki Sekine. "Effect of Matrix Hardening on Tensile Strength of Alumina-Fiber Reinforced Aluminum Matrix Composites." Key Engineering Materials 430 (March 2010): 83–99. http://dx.doi.org/10.4028/www.scientific.net/kem.430.83.

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This paper examines the stress distribution around a fiber break in alumina-fiber reinforced aluminum matrix (Al2O3/Al) composites using finite element analysis and predicts the tensile strength using tensile failure simulations. In particular, we discuss the effect of the matrix hardening on the tensile failure of the Al2O3/Al composites. First, we clarify the differences in the stress distribution around a fiber break between an elastic-perfect plastic matrix and an elastic-plastic hardening matrix using finite element analysis. Second, the procedure for simulating fiber damage evolution in the Al2O3/Al composites is presented. The simulation incorporates the analytical solution for the axial fiber stress distribution of a broken fiber in the spring element model for the stress analysis of the whole composite. Finally, we conduct Monte Carlo simulations of fiber damage evolution to predict the tensile strength of the Al2O3/Al composites, and discuss the effect of matrix hardening on the tensile strength of the Al2O3/Al composites. Coupled with size-scaling analysis, the simulated results express the size effect on the strength of the composites, which is seen in experimental results.

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Nasresfahani, Mohamad Reza, and Morteza Shamanian. "Characterization of Al1100-RHA composite developed by accumulative roll bonding." Journal of Composite Materials 53, no. 15 (December 11, 2018): 2047–52. http://dx.doi.org/10.1177/0021998318817938.

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A metal–matrix composite was developed by eco-friendly accumulative roll bonding process and agricultural wastes. Amorphous silica particles were obtained by heating rice husk at 600℃ and then ball milling. Amorphous silica particles as a reinforcement were embedded in a matrix of aluminum 1100. Composites with various amounts (1%, 2%, 3%, 4%, 5%, 6%, and 7%, mass fraction) of rice husk ash particles were developed. The produced aluminum–rice husk ash composites were evaluated for structural changes and mechanical properties. The scanning electron micrographs showed a uniform distribution of rice husk ash particles and were bonded well with the aluminum matrix after 10 cycles. By increasing the rice husk ash content, the composite strength increases first and then becomes constant because of the inappropriate connection of aluminum sheets. Increasing the rice husk ash content of the composite causes the change from the ductile to a relatively brittle type of fracture.

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Kyono, Tetsuyuki, Etsuro Kuroda, Atsushi Kitamura, Tsutomu Mori, and Minoru Taya. "Effects of Thermal Cycling on Properties of Carbon Fiber/Aluminum Composites." Journal of Engineering Materials and Technology 110, no. 2 (April 1, 1988): 89–95. http://dx.doi.org/10.1115/1.3226035.

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Effects of thermal cycling on mechanical properties such as longitudinal tensile strength, interlaminar shear strength and work of fracture of carbon fiber/aluminum composites have been investigated. The composite specimens fabricated by a squeeze casting technique were thermally cycled in fluidized baths between room temperature and various temperatures (250, 300, and 350° C) for up to 1000 cycles. The cross sections and fracture surfaces were examined to clarify the degradation mechanism. Significant degradation of the mechanical properties by thermal cycling was observed in untreated carbon fiber/aluminum composites whereas much less degradation in surface treated carbon fiber/aluminum composites. Microscopic observations and short beam shear tests have indicated that the degradation of mechanical properties is caused by debonding at the fiber/matrix interface. The fiber/matrix interface for surface treated fiber was more resistant to debonding. It is concluded that thermal cycling damage of carbon fiber/aluminum composites can be minimized by increasing their fiber/matrix bond strengths.

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Journal articles on the topic 'Aluminum matrix composites'

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