Journal articles: 'Aluminum alloys. Aluminum Materials'

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Wongpreedee, Kageeporn, Panphot Ruethaitananon, and Tawinun Isariyamateekun. "Interface Layers of Ag-Al Fusing Metals by Casting Processes." Advanced Materials Research 787 (September 2013): 341–45. http://dx.doi.org/10.4028/www.scientific.net/amr.787.341.

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The materials of fusing metals commercially used in the jewelry niche marketing is seen as precious metals. An innovation of fusing metals searched for new materials to differentiate from the markets for mass production. In this research, it studied the bonding processes of silver and aluminium metals by casting processes for mass productions. The studies had been varied parameters on the types of aluminium and process temperature controls. This research had used two types of aluminium which were pure aluminium 99.99% and aluminum 5083 alloys bonding with pure silver 99.99%. The temperatures had been specified for two factors including casting temperature at X1, X2 and flasking temperature at Y1, Y2. From the results, it was found that the casting temperature at 730°C and the flasking temperature at 230 °C of pure silver-aluminum 5083 alloys bonding had the thinnest average thickness of interface at 427.29 μm. The microstructure of pure silver-aluminum 5083 alloy bonding was revealed eutectic-like structures at the interfaces. The EDS analysis showed the results of compounds at interface layers of Ag sides giving Ag2Al intermetallics on pure silver-aluminum 5083 alloy bonding unlike pure silver-pure aluminium bonding giving Ag3Al intermetallics.

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Mounika, G. "Closed Loop Reactive Power Compensation on a Single-Phase Transmission Line." International Journal for Research in Applied Science and Engineering Technology 9, no. VI (June 20, 2021): 2156–59. http://dx.doi.org/10.22214/ijraset.2021.35489.

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Zinc-aluminium alloys are alloys whose main ingredients stay zinc and aluminium. Other alloying elements clasp magnesium and copper .Zinc Aluminum Alloys over the past decayed are occupying attention of both researches and industries as a promising material for tribological applications. At this moment commercially available Zinc-Aluminium alloys and bearing bronzes due to good cost ability and unique combination of properties. They can also be deliberated as competing material for cast iron, plastics and even for steels. It has been shown that the addition of alloying elements including copper, silicon, magnesium, manganese and nickel can improve the mechanical and tribological properties of zinc aluminum alloys. This alloy has still found limited applications encompassing high stress conditions due to its lower creep resistance, compared to traditional aluminum alloys and other structural materials. This has resulted in major loss of market potential for those alloy otherwise it is excellent material. The aim of this paper is to measure the coefficient of friction and wear under different operating conditions for material with silicon content. Then wear equation will be found out for all the materials experimented under various conditions. In this paper there is discussion of the effect of Silicon on tribological properties of aluminium based Zinc alloy by experiment as well as Ansys software based and compares the same.

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Ishimaru, Hajime. "Developments and Applications for All-Aluminum Alloy Vacuum Systems." MRS Bulletin 15, no. 7 (July 1990): 23–31. http://dx.doi.org/10.1557/s0883769400059212.

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Aluminum and aluminum alloys have long been among the preferred materials for ultrahigh vacuum (UHV) systems operating in the 10−10–10−11 torr (10−8–10−11 Pa) range. Pure aluminum and aluminum alloys have an extremely low outgassing rate, are completely nonmagnetic, lack crystal structure transitions at low temperatures, are not sources of heavy metals contamination in semiconductor processing applications, have low residual radioactivity in radiation environments, and are lightweight. Because of aluminum's high thermal conductivity and low thermal emissivity, aluminum components can tolerate high heat fluxes in spite of the relatively low melting point of aluminum.Recently developed aluminum alloys and new surface finishing techniques allow the attainment of extremely high vacuums (XHV) in the 10−12–10−13 torr (10−10–10−11 Pa) range. XHV technology requires the use of special aluminum alloy flange/gasket/bolt, nut and washer combinations, aluminum alloy-ceramic seals, windows, bellows, right-angle and gate valves, turbomolecular pumps, sputter ion pumps and titanium sublimination pumps, Bayard-Alpert ion gauges, quadrupole mass filters, and related aluminum alloy vacuum components. New surface treatment methods and new techniques in welding and extremely sensitive helium leak testing are required. In short, a whole new technology has been developed to take advantage of the opportunities presented by these new vacuum materials. This article describes some of these newly developed fabrication technologies and vacuum materials.The TRISTAN electron-positron collider constructed at the National Laboratory for High Energy Physics in Japan is the first all-aluminum alloy accelerator, and the first to use UHV technology.

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Zou, Cheng Lu, Gui Hong Geng, and Wei Ye Chen. "Development and Application of Aluminium-Lithium Alloy." Applied Mechanics and Materials 599-601 (August 2014): 12–17. http://dx.doi.org/10.4028/www.scientific.net/amm.599-601.12.

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The history of aluminium-lithium alloys development has been reviewed in this paper. According to the strength, weld ability and corrosion resistance, thermal stability and plasticity, aluminium-lithium alloy has been categorized and the defects of aluminium-lithium alloys in early stage have been analyzed. As compared the third generation of aluminium-lithium alloy with normal aluminum alloy and composite materials, it indicates aluminium-lithium alloy has better performance, lower cost and reduced weight. After analyzing the advantages and disadvantages of the rapid solidification, ingot casting metallurgy and electromagnetic simulated microgravity methods in synthesis of aluminium-lithium alloy, it has been found microgravity method has prominent effect on reducing the alloy segregation and lithium losses. Finally, the future development of aluminium-lithium alloys has been discussed.

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Martin, J. W. "Aluminum-Lithium Alloys." Annual Review of Materials Science 18, no. 1 (August 1988): 101–19. http://dx.doi.org/10.1146/annurev.ms.18.080188.000533.

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Hosford, William F. "The anisotropy of aluminum and aluminum alloys." JOM 58, no. 5 (May 2006): 70–74. http://dx.doi.org/10.1007/s11837-006-0027-7.

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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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Huynh, Khanh Cong, and Luc Hoai Vo. "Modification of aluminium and aluminium alloys by AL-B master alloy." Science and Technology Development Journal 17, no. 2 (June 30, 2014): 56–66. http://dx.doi.org/10.32508/stdj.v17i2.1315.

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Chemical compositions and microstructures affect on mechanical – physical and working properties of aluminium and aluminum alloys. Transition elements, such as Ti, V, Cr, Zr in solid solution greatly reduce the electrical conductivity of aluminium and its alloys. For reduction of detrimental effects of transition elements, Al-B master alloys are added into molten aluminium to occur reactions of boron and transition elements to form diborides of titanium, vanadium, chromium and zirconium, which are markedly insoluble in molten aluminium, then these transition elements have an insignificant effects on conductivity. In addition, Al-B master alloys is also used as a grain refiner of aluminium and aluminium alloys. Aluminium borides particles in Al-B master alloys act as substrates for heterogeneous nucleation of aluminium and its alloys. Al-B master alloys are prepared from low cost materials, such as boric acid H3BO3 and cryolite Na3AlF6, by simple melting method, easily realize in electrical wire and cable factories.

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Mamala, A., and W. Sciężor. "Evaluation of the Effect of Selected Alloying Elements on the Mechanical and Electrical Aluminium Properties." Archives of Metallurgy and Materials 59, no. 1 (March 1, 2014): 413–17. http://dx.doi.org/10.2478/amm-2014-0069.

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Abstract Modern industry expects aluminum products with new, unusual, and well-defined functional properties. Last years we are able to notice constant development of aluminium alloys. In food industry, power engineering, electrical engineering and building engineering, flat rolled products of 1XXX series aluminium alloys are used.8XXX series alloys registered in Aluminium Association during last 20 years may be used as an alternative. These alloys have very good thermal and electrical conductivity and perfect technological formability. Moreover, these materials are able to obtain by aluminium scrap recycling. Fundamental alloy additives of 8XXX series are Fe, Si, Mn, Mg, Cu and Zn. Aluminium alloying with these additives makes it possible to obtain materials with different mechanical ale electrical properties. In this paper, the analysis of alloy elements content (in 8XXX series) effect on chosen properties of material in as cast and after thermal treatment tempers has been presented.

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Visuttipitukul, Patama, Tatsuhiko Aizawa, and Hideyuki Kuwahara. "Advanced Plasma Nitriding for Aluminum and Aluminum Alloys." MATERIALS TRANSACTIONS 44, no. 12 (2003): 2695–700. http://dx.doi.org/10.2320/matertrans.44.2695.

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Czerwinski, Frank. "Cerium in aluminum alloys." Journal of Materials Science 55, no. 1 (August 28, 2019): 24–72. http://dx.doi.org/10.1007/s10853-019-03892-z.

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Shibue, Kazuhisa, and Naoki Tokizane. "Spray Forming on Aluminum Alloys." Materia Japan 34, no. 6 (1995): 736–40. http://dx.doi.org/10.2320/materia.34.736.

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Alekseev, A. V., V. V. Strekalov, A. A. Khasin, and M. R. Predtechensky. "Effect of carbon nanotubes and oxide nanofibers on mechanical properties of aluminum AD0 after cold working and annealing." Perspektivnye Materialy 4 (2021): 56–66. http://dx.doi.org/10.30791/1028-978x-2021-4-56-66.

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Cast aluminium composite materials based on AD0 aluminium, reinforced with carbon nanotubes and aluminium oxide nanofibers are obtained. It is shown that the additives of 0.05 wt % of single wall carbon nanotubes (SWCNT) and aluminum oxide nanofibers (AONF) allow increasing ultimate tensile strength of cast metal by 15 % and 16 % respectively. Strengthening of the metal is maintained after cold deformation and annealing. Aluminum AD0 with additives SWCNT or AONF retains high strength after annealing, while aluminum without additives is significantly weakened, this allows to obtain annealed aluminum wire, with a strength limit of 54 – 69 % and yield strength of 53 – 78 % higher than that of metal without additives. The influence of SWCNT and AONF on the size of aluminum grain AD0 in the cast state, after cold deformation and annealing has been studied. Nano-additives have been found to inhibit the growth of metal grains at the stage of collective recrystallization, as well as to influence the process of primary recrystallization of aluminum.

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MAHRAN, Gamal Mohamed Attia, Abdel-Nasser Mohamed OMRAN, and El-Sayed Sedek ABU SEIF. "The Formation Mechanism and Characterization of Al-Si Master Alloys from Sodium Fluosilicate." Materials Science 26, no. 2 (December 18, 2019): 185–91. http://dx.doi.org/10.5755/j01.ms.26.2.21896.

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A modified Al-Si alloy containing up to 15 wt.% Si has been obtained from the reaction of sodium fluosilicate (Na2SiF6) with molten aluminum. This work attempted to estimate the mechanism of the reaction of Na2SiF6 with molten aluminum to produce Al-Si alloys. The effect of temperature, Na2SiF6/Al Wt ratio and reaction time on the formation of Al-Si alloy were investigated. The thermodynamic data, kinetic and rate of the reaction were studied. The results showed the possibility of the reaction between Na2SiF6 and molten aluminum thermodynamically, and that this reaction might be controlled chemically. The current study aims to optimize the factors that affecting the preparation of a modified Al-Si alloy from a reduction of sodium fluosilicate using molten aluminium. Temperature 950 oC, reaction time 20 – 25 min and Na2SiF6/Al Wt ratio related to the applied Si percentage. The prepared alloys could be modified due to the presence of Na2SiF6 in the used material as a source of sodium in response to modifying the produced Al-Si alloys. The microstructure by using LOM, SEM, and EDX proved that the needle-like silicon converts to fine fibrous. The volume fraction of primary Si reduces and the eutectic point moves to a higher silicon concentration. The modification improves the wear characteristics and increases the tensile and hardness.

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Araújo Filho, Oscar Olimpio, Alexandre Douglas Araújo de Moura, Everthon Rodrigues de Araújo, Maurílio José dos Santos, Cezar Henrique Gonzalez, and Flávio José da Silva. "Manufacturing and Characterization of AA1100 Aluminum Alloy Metal Matrix Composites Reinforced by Silicon Carbide and Alumina Processed by Powder Metallurgy." Materials Science Forum 869 (August 2016): 447–51. http://dx.doi.org/10.4028/www.scientific.net/msf.869.447.

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Powder Metallurgy (PM) Techniques consists in a suitable technique to process composites materials. A specific PM technique of mechanical alloying developed to produce new materials in the solid state is a consolidated route to obtain aluminum alloys metal matrix composites. Aluminum alloys metal matrix composites allies the good properties of aluminum and its alloys but with poor mechanical properties and the reinforcement of ceramics phases which add better mechanical properties to these alloys. The research of this materials processing by PM techniques presented new materials with improved properties. In this work an AA1100 aluminum alloy was reinforced by particulate silicon carbide and alumina types of ceramic phases. The powders were mixed and then processed by mechanical alloying in a SPEX vibratory type mill. Then the powders obtained were compacted and vacuum sintered. The sintered composites were characterized by means of Scanning Electron Microscopy (SEM) plus Energy Dispersive Spectroscopy (EDS) and Vickers hardness (HV) tests to evaluate the mechanical behavior.

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Bezerra, Carlos Augusto, Alexandre Douglas Araújo de Moura, Edval Gonçalves de Araújo, Maurílio José dos Santos, and Oscar Olimpio de Araújo Filho. "Features of the Processing of AA2124 Aluminum Alloy Metal Matrix Composites Reinforced by Silicon Nitride Prepared by Powder Metallurgy Techniques." Materials Science Forum 802 (December 2014): 108–13. http://dx.doi.org/10.4028/www.scientific.net/msf.802.108.

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Powder Metallurgy (PM) Techniques consists in a suitable technique to process composites materials. A specific PM technique of mechanical alloying developed to produce new materials in the solid state is a well known route to obtain aluminum alloys metal matrix composites. Aluminum alloys metal matrix composites allies the good properties of aluminum and its alloys but with poor mechanical properties and the reinforcement of ceramics phases which add better mechanical properties to these alloys. The research of this materials processing by PM techniques presented new materials with improved properties. In this work an AA2124 aluminum alloy was reforced by particulated silicon nitride a kind of ceramic phase. The powders were mixed and then processed by mechanical alloying in a SPEX vibratory type mill. Then the powders obtained were compacted and vacuum sintered. The sintered composites were characterized by means of Scanning Electron Microscopy (SEM) plus Energy Dispersive Spectroscopy (EDS) and Vickers hardness tests to evaluate the mechanical behavior.

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17

Czerwinski, Frank. "Thermal Stability of Aluminum Alloys." Materials 13, no. 15 (August 4, 2020): 3441. http://dx.doi.org/10.3390/ma13153441.

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Thermal stability, determining the material ability of retaining its properties at required temperatures over extended service time, is becoming the next frontier for aluminum alloys. Its improvement would substantially expand their range of structural applications, especially in automotive and aerospace industries. This report explains the fundamentals of thermal stability; definitions, the properties involved; and the deterioration indicators during thermal/thermomechanical exposures, including an impact of accidental fire, and testing techniques. For individual classes of alloys, efforts aimed at identifying factors stabilizing their microstructure at service temperatures are described. Particular attention is paid to attempts of increasing the current upper service limit of high-temperature grades. In addition to alloying aluminum with a variety of elements to create the thermally stable microstructure, in particular, transition and rare-earth metals, parallel efforts are explored through applying novel routes of alloy processing, such as rapid solidification, powder metallurgy and additive manufacturing, engineering alloys in a liquid state prior to casting, and post-casting treatments. The goal is to overcome the present barriers and to develop novel aluminum alloys with superior properties that are stable across the temperature and time space, required by modern designs.

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Kuchariková, Lenka, Tatiana Liptáková, Eva Tillová, Daniel Kajánek, and Eva Schmidová. "Role of Chemical Composition in Corrosion of Aluminum Alloys." Metals 8, no. 8 (July 26, 2018): 581. http://dx.doi.org/10.3390/met8080581.

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Aluminum alloys are the most important part of all shaped castings manufactured, especially in the aerospace and automotive industries. This work focuses on the corrosion properties of the heat-hardening aluminum alloys commonly used for production of automotive castings AlSi7Mg0.3 and on self-hardening AlZn10Si8Mg. Iron is a common impurity in aluminum cast alloy and its content increases by using secondary aluminum alloys. Therefore, experimental materials were developed, with chemical composition according to standards (primary alloys) and in states with an increasing content of Fe. The experimental aluminum alloys are briefly discussed in terms of their chemical composition, microstructure, mechanical properties and corrosion behavior. Corrosion properties were examined using three types of corrosion tests: exposure test, potentiodynamic tests, and Audi tests. Corrosion characteristics of materials were evaluated using stereo, optical and scanning electron microscopy, energy dispersive X-ray analysis, too. Correlation of pit initiation sites with microstructural features revealed the critical role of iron-rich phases, silicon particles and corresponding alloy matrix.

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Tamura, Ryo, Makoto Watanabe, Hiroaki Mamiya, Kota Washio, Masao Yano, Katsunori Danno, Akira Kato, and Tetsuya Shoji. "Materials informatics approach to understand aluminum alloys." Science and Technology of Advanced Materials 21, no. 1 (January 31, 2020): 540–51. http://dx.doi.org/10.1080/14686996.2020.1791676.

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Zolotorevskii, V. S. "Modern cast aluminum alloys." Metal Science and Heat Treatment 35, no. 7 (July 1993): 382–88. http://dx.doi.org/10.1007/bf00775090.

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Elagin, V. I., V. V. Zakharov, and T. D. Rostova. "Scandium-alloyed aluminum alloys." Metal Science and Heat Treatment 34, no. 1 (January 1992): 37–45. http://dx.doi.org/10.1007/bf00768707.

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Zakharov, V. V. "Structurally strengthened aluminum alloys." Metal Science and Heat Treatment 51, no. 1-2 (January 2009): 74–81. http://dx.doi.org/10.1007/s11041-009-9113-0.

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Fridlyander, I. N. "Structural aluminum-lithium alloys." Metal Science and Heat Treatment 32, no. 4 (April 1990): 235–45. http://dx.doi.org/10.1007/bf00729862.

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Mohd Nor, Mohd Khir, and Ibrahim Mohamad Suhaimi. "Effects of Temperature and Strain Rate on Commercial Aluminum Alloy AA5083." Applied Mechanics and Materials 660 (October 2014): 332–36. http://dx.doi.org/10.4028/www.scientific.net/amm.660.332.

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Superplastic forming, SPF is a special metalworking process that allows sheets of metal alloys such as aluminum to be stretched to lengths over ten times. Nowdays, only a few aluminium alloys can meet the specific requirement of SPF manufacturing process and not much data available to represent their mechanical behaviour. In order to deal with this issue, this research project is conducted to investigate the characteristics of commercial aluminum alloy, AA5083 when tested at different strain rates and temperatures. These parameters play a crucial roles in the design and manufacturing processes of military, automotive and aerospace structures. Equally, the effects must be considered in the constitutive model development to accurately capture the deformation behaviour of such materials. The specimens were prepared according to 12.5mm gauge length standard. The Uniaxial Tensile Tests were carried out at various strain rate from 4.167 x10-1s-1to 4.167 x10-5s-1over a wide temperature range from ambient to 95°C. The experimental data shows that increasing strain rate increases flow stress, while increasing temperature decrease flow stress. This is leads to important conclusion that material AA5083 exhibits strain rate and temperature sensitivite, and suit with the SPF operating condition.

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Takano, H., Takafumi Kusunose, Tohru Sekino, Rajagopalan Ramaseshan, and Koichi Niihara. "Development of Low Machining Cost Materials by Using Aluminum Borate." Key Engineering Materials 317-318 (August 2006): 335–38. http://dx.doi.org/10.4028/www.scientific.net/kem.317-318.335.

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6061 aluminum alloy composite reinforced with α-alumina and aluminum borate is fabricated by casting method. The above mentioned composite has been compared to a similar composite without aluminum borate reinforcement for their machinability. The aluminum borate filler was controlled up to (2.5, 5.0 and 30vol %) on the surface of α-alumina. The reaction zone between alumina and the matrix in both the systems are analyzed with the help of TEM micrographs as well as X-ray diffraction profiles. At the reaction zone between alumina and the aluminum alloys, some spinel-like compounds (MgAl2O4) are identified. Finally, machinability was analyzed with the single point tool machining.

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Bainbridge, Ian Frank, and John Andrew Taylor. "The Surface Tension of Pure Aluminum and Aluminum Alloys." Metallurgical and Materials Transactions A 44, no. 8 (March 16, 2013): 3901–9. http://dx.doi.org/10.1007/s11661-013-1696-9.

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Wada, Tadahiro, Kazuki Hiro, and Shinji Yoshihara. "Machinability of Aluminum Alloys." Journal of the Japan Society of Powder and Powder Metallurgy 51, no. 4 (2004): 199–205. http://dx.doi.org/10.2497/jjspm.51.199.

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Mills, Kurt, Gui Wang, David StJohn, and Matthew Dargusch. "Ultrasonic Processing of Aluminum–Magnesium Alloys." Materials 11, no. 10 (October 16, 2018): 1994. http://dx.doi.org/10.3390/ma11101994.

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This study evaluated the effect of UltraSonic Treatment (UST) on a range of Al–Mg alloys. Previous research was carried out on single magnesium compositions. However, the amount and type of the alloy addition are known to affect the grain size even under UST, and the aim of this study was to determine whether or not alloy composition plays a similar role in the case of Al–Mg alloys. By testing binary Al–Mg alloys cast under regular casting conditions and under the presence of an ultrasonic field, it was found that while the addition of Mg solute is important, the amount of solute has little effect when UST is applied. It was observed that the grain size was barely affected by extra solute additions in this condition. This is due to the application of UST during solidification, which resulted in a dramatic reduction in the size of the nucleation free zone thus promoting many more successful nucleation events. Acoustic streaming is proposed as the main cause of this reduction in grain size.

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Tsunekawa, Yoshiki. "Surface Modification Processes of Aluminum Alloys." Materia Japan 34, no. 6 (1995): 730–35. http://dx.doi.org/10.2320/materia.34.730.

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Kobayashi, Naoko, Kazuhiko Kita, and Akihisa Inoue. "Microstructure of Nano-crystalline Aluminum Alloys." Materia Japan 42, no. 12 (2003): 862. http://dx.doi.org/10.2320/materia.42.862.

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Guo, Hong Min, and Xiang Jie Yang. "Rheoforging of Wrought Aluminum Alloys." Solid State Phenomena 141-143 (July 2008): 271–76. http://dx.doi.org/10.4028/www.scientific.net/ssp.141-143.271.

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Wrought aluminum alloys have wide variety applications in aerospace and automobile industries, due to their superior properties compared to casting aluminum alloys. Rheoforging is a modification of thixoforging, which starts directly from the liquid phase instead of reheating of a billet. In the present process, suitable semi-solid slurries of wrought aluminum alloys are prepared by the LSPSF (low superheat pouring with a shear field) rheocasting process within 25s. The effects of processing conditions on the degree of spherical grain refinement in 2024, 6082 and 7075 alloys are discussed. 2024 and 7075 alloys have been used in order to investigate rheoformability of high performance aluminum alloy. Experimental results show that rheoforging based on LSPSF process can produce relatively homogeneous microstructure throughout the cup-shaped component. However, high solid fraction of semi-solid slurry promotes metal flow and results in solid/liquid segregation. Subsequent optimized heat treatments raise significantly the mechanical properties. Future potentials and challenges to be solved are discussed.

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Mandatsy Moungomo, Jean Brice, Donatien Nganga Kouya, and Victor Songmene. "Turning and Drilling Machinability of Recycled Aluminum Alloys." Key Engineering Materials 710 (September 2016): 77–82. http://dx.doi.org/10.4028/www.scientific.net/kem.710.77.

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A great deal of effort and research has been dedicated to recycled aluminum alloys, mainly to recycling processes and to the mechanical properties of recomposed parts; however, very limited work has been oriented towards the machinability of recycled aluminum materials. Recycled and recomposed aluminum parts sometimes need machining to obtain the final usable part shape and for assembly purposes. The acceptability of using recycled materials in design and engineering applications depends not only on their mechanical properties, but also on their machinability. This paper investigates the machinability of recycled aluminum alloys based on surface finish, cutting forces and chip formation. Two recycled foundry aluminum alloys were used: one from aluminum can covers and another from aluminum chips produced during machining. The machining operations investigated included turning and drilling under dry and wet conditions. The two tested recycled aluminum alloys showed different machinability behaviors and different part quality characteristics, suggesting that it would be desirable to consider separating aluminum wastes and chips considered for recycling by origin or type prior to melting and recasting.

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Xu, Junli, Jing Zhang, and Zhongning Shi. "Extracting Aluminum from Aluminum Alloys in AlCl3-NaCl Molten Salts." High Temperature Materials and Processes 32, no. 4 (August 16, 2013): 367–73. http://dx.doi.org/10.1515/htmp-2012-0152.

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AbstractExtracting aluminum from aluminum alloys in AlCl3-NaCl molten salts was investigated in this paper. The influences of experimental parameters such as electrolyte composition, cathodic current density and electrolysis time on the deposits morphology were discussed. The results show that the grain size of the deposits decreases with the increase of AlCl3 content in the electrolyte. Current density has a big effect on the morphology of the deposits. The particle size of deposits increases with the increase of current density, and dendritic morphology forms at high current density. High nucleation rates are achieved at high current densities above the limiting diffusion current density, and will result in a finer grain size. A non-dendritic deposit of aluminum was obtained at 170°C at 50 mA cm−2 cathodic current density for 1 h in the electrolyte having a 1.3 molar ratio of AlCl3/NaCl. The purity of the aluminum deposit is about 99.79% analyzed using inductively coupled plasma.

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Kumar, J. Suresh, M. Siva, N. Suneel Kumar, CH V. V. S. S. R. Krishna Murthy, and V. V. Ravi Kumar. "Forming of AA2xxx and AA7xxx Sheet Alloys and their Studies on Microstructural and Mechanical Properties of Cold and Cryo Rolled Aluminum Alloys." Materials Science Forum 969 (August 2019): 546–51. http://dx.doi.org/10.4028/www.scientific.net/msf.969.546.

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High strength aluminum alloys will enhancing mechanical properties always plays a major role in controlling microstructure of cast and processed alloy. The desire for more efficient aircraft materials has fueled research of aluminum AA-2xxx and AA7xxx alloys. In these alloys were rolled at cold rolling and at cryorolling to 80 % thickness reductions and an attempt was made to evaluate the optical-microstructural variation and the variation in tensile properties of these aluminum alloys. Cryorolled alloy also exhibited better hardness and strength compared to cold alloy due to suppressed thermal recovery. Coldrolled alloy showed more necking percentage compared to cryorolled for rolling reductions of 80% and more formability was observed.

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Fernández, R., and G. González-Doncel. "Understanding the creep fracture behavior of aluminum alloys and aluminum alloy metal matrix composites." Materials Science and Engineering: A 528, no. 28 (October 2011): 8218–25. http://dx.doi.org/10.1016/j.msea.2011.07.027.

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Srikanth, S., and K. T. Jacob. "Thermodynamics of aluminum-barium alloys." Metallurgical Transactions B 22, no. 5 (October 1991): 607–16. http://dx.doi.org/10.1007/bf02679015.

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Zhao, Xuehang, Haifeng Li, Tong Chen, Bao’an Cao, and Xia Li. "Mechanical Properties of Aluminum Alloys under Low-Cycle Fatigue Loading." Materials 12, no. 13 (June 27, 2019): 2064. http://dx.doi.org/10.3390/ma12132064.

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In this paper, the mechanical properties of 36 aluminum alloy specimens subjected to repeated tensile loading were tested. The failure characteristics, stress-strain hysteresis curves and its corresponding skeleton curves, stress cycle characteristics, and hysteretic energy of specimens were analyzed in detail. Furthermore, the finite element model of aluminum alloy specimens under low-cycle fatigue loading was established and compared with the experimental results. The effects of specimen parallel length, parallel diameter, and repeated loading patterns on the mechanical properties of aluminum alloys were discussed. The results show that when the specimen is monotonously stretched to fracture, the failure result from shearing break. When the specimen is repeatedly stretched to failure, the fracture of the specimen is a result of the combined action of tensile stress and plastic fatigue damage. The AA6061, AA7075, and AA6063 aluminum alloys all show cyclic softening characteristics under repeated loading. When the initial stress amplitude of repeated loading is greater than 2.5%, the repeated tensile loading has a detrimental effect on the deformability of the aluminum alloy. Finally, based on experiment research as well as the results of the numerical analysis, the calculation method for the tensile strength of aluminum alloys under low-cycle fatigue loading was proposed.

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Lyon, P., J. F. King, and G. A. Fowler. "Developments in Magnesium-Based Materials and Processes." Journal of Engineering for Gas Turbines and Power 115, no. 1 (January 1, 1993): 193–99. http://dx.doi.org/10.1115/1.2906677.

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Recent developments in magnesium alloys, processing techniques, and corrosion protection schemes are reviewed. The casting alloy WE43 is detailed, data being presented showing that it compares favorably with aluminum-based casting alloys on a strength-to-weight basis. In addition its intrinsic corrosion characteristics are shown to be similar to those of aluminum-base alloys. A countergravity casting process, specifically designed to make higher quality, thin-walled magnesium alloy components, is described, together with property data indicating the improvements obtained. Also discussed are the ongoing developments in metal matrix composites and rapid solidification technologies, showing the benefits offered by these processing routes. Finally current corrosion protection schemes are reviewed and their overall cost effectiveness discussed.

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Grzebinoga, Justyna, Andrzej Mamala, Tadeusz Knych, Paweł Kwaśniewski, Wojciech Ściężor, Grzegorz Kiesiewicz, Artur Kawecki, Radosław Kowal, Eliza Sieja-Smaga, and Bartosz Jurkiewicz. "New Aluminum Base Materials for Use on Electrical Purposes." Key Engineering Materials 682 (February 2016): 61–68. http://dx.doi.org/10.4028/www.scientific.net/kem.682.61.

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Modern power industry expects new, dedicated aluminum based alloys with non-standard properties, including increased resistance to temperature. Materials exhibiting higher thermal resistance allow to increase operating temperature of electrical conductors, which results in the increase of their current carrying capacity. Commonly known and used in such applications are alloys from the AlZr group. Despite their advantages scientists from around the world are searching for new alternatives. In this paper authors present research results on Al-Mo and Al-Ag alloys with particular interest to the analysis of the molybdenum addition to the aluminum in the amount of 0.05, 0.1, 0.2% and silver addition in the amount of 0.05, 0.1, 0.15% by mass on the mechanical and electrical properties of obtained alloys. Tests were also carried out for reference material which is high-purity aluminum and the AlZr alloy, both in the as cast state temper. Results showed a significant change of temperature coefficient of resistance in Al-Ag alloys compared to Al, which leads to possible increase of the Joule’a heat without the raise of conductors temperature limit. On the other hand, above-average heat resistance of alloys from the Al-Mo group of materials was achieved during the trials. On that basis authors state that Al-Ag alloys may be used for the production of ACSS conductors and Al-Mo alloys for TACSR or TACIR type of conductors.This study was performed under a project financed by NCBiR within the INNOTECH II program.

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Pan, He. "Development and Application of Lightweight High-strength Metal Materials." MATEC Web of Conferences 207 (2018): 03010. http://dx.doi.org/10.1051/matecconf/201820703010.

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This article reviews the performance, alloy composition and the development of advanced lightweight high-strength materials such as high-strength steels, high-strength aluminum alloys, high-strength magnesium alloys, and titanium alloys.

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OKANO, Shinobu. "New technologies of aluminum castings. Processing of semi-solid aluminum alloys." Journal of Japan Institute of Light Metals 47, no. 11 (1997): 598–604. http://dx.doi.org/10.2464/jilm.47.598.

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Rajesh Kannan, Subburaj, J. Lakshmipathy, M. Vignesh Kumar, K. Manisekar, and N. Murugan. "Optimization Analysis of Process Parameters of Friction Stir Welded Dissimilar Joints of Aluminium Alloys." Applied Mechanics and Materials 867 (July 2017): 112–18. http://dx.doi.org/10.4028/www.scientific.net/amm.867.112.

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Friction stir welding (FSW) is one of the new technique for welding materials in solid state welding process. In this proposed work we are using FSW to join the two dissimilar alloys of aluminium. The 6mm thick aluminum plates of aluminium 5086 and aluminum 7075 plates are considered for welding. These have been considered due to their application in various fields. In this experimental process Taguchi’s L9 orthogonal array method is used for optimizing the three process parameters namely rotational speed, axial force and welding speed. To produce a better joint the tensile strength is predicted for the optimum welding parameters and also their percentage of contribution is calculated, by applying the effect of analysis of variance. Depends upon the experimental study, the rotational speed is found better over the other process parameters, which enhances the quality of the weld. The tensile strength has been found for the optimum parameters and the result found during the experiment was 290Mpa which was higher than the base metal strength of aluminium 5086 alloy. The SEM fractograph analysis was done on the optimum parameters welded joints to show the fracture behaviour of tensile test which justifies the visual inspection results of brittle and ductile failures.

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Nikitin, V. I., K. V. Nikitin, I. Yu Timoshkin, and R. M. Biktimirov. "Synthesis of Aluminum Alloys from Dispersed Waste Based on Aluminum." Russian Journal of Non-Ferrous Metals 61, no. 6 (November 2020): 632–40. http://dx.doi.org/10.3103/s1067821220060152.

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Tjahjanti, Prantasi Harmi, Djauhar Manfaat, Eko Panunggal, Darminto, and Wibowo Harso Nugroho. "Numerical Modeling of Ship Composite-Based on Aluminum Casting as Alternative Materials for Ship Building." Advanced Materials Research 789 (September 2013): 143–50. http://dx.doi.org/10.4028/www.scientific.net/amr.789.143.

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The structure and construction of the ship is made of aluminum alloy, generally are of wrought aluminum alloys, when experiencing fatigue failure caused by a cracked vessel structure, is a serious problem. Reviewing of 'weakness' of wrought aluminum alloys for the ship, then in this study tries to provide material alternative for ship building is composite material based on aluminum casting AlSi10Mg (b) and reinforcing material silicon carbide (SiC), which has been in-treatment with the optimum composition 15%. Analysis of numerical computation with the help of ANSYS software version 2.00 to be made numerical modeling ship to ship aluminum EN AC-AlSi10Mg (b) and ship composite EN AC-AlSi10Mg (b)+SiC*/ 15p whether the material can be applied to building ship for see the distribution of stress . The results of the stress distribution in both of model numerical of ship, its value does not exceed the stress permits (sigma 0.2) and have a factor of safety above the minimum allowable limit, so it is safe to use. The overall, in numerical modeling, the ship material aluminum and ship composite materials can be used as an alternative material for ship building, however is still needed comprehensive testing in the field.Keywords: Aluminum casting ; ship building ; composite EN AC-43100(AlSi10Mg (b))+SiC*/15p; ANSYS ver.12,0

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Jin, Yu Hua, Zhen You Huang, and Chang Feng Li. "Interface Characterization and Materials Flow Pattern Analysis for Friction Stir Welding Overlap Joints of Mg/Al Dissimilar Alloys." Applied Mechanics and Materials 624 (August 2014): 106–13. http://dx.doi.org/10.4028/www.scientific.net/amm.624.106.

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In this paper, the interface characterization and materials flow pattern of overlap joints of dissimilar alloys of 6061-T6 aluminum alloy and AZ31B magnesium alloy welded by friction stir overlap welding with a reverse conical pin tool were investigated. The results shown that: when AZ31B magnesium alloy sheet was placed over 6061-T6 aluminum alloy sheet, and AZ31B magnesium alloy sheet was settled at advancing side while 6061-T6 aluminum alloy sheet was at retreating side, it could eliminate the influence of migration interface on the strength of the lap joints. What is more, the intermetallic compound Mg17Al12 were formed at advancing side of magnesium alloy sheet and retreating side of initial interface between magnesium alloy sheet and aluminum alloy sheet. According to the distribution of intermetallic compound and the characteristics of migration interface, the plastic flowing pattern of metal in welding process was also evaluated.

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Nemchinova, Nina V., Sergei S. Belskii, and Alexander A. Vlasov. "Studying Aluminum Alloy Defects." Solid State Phenomena 316 (April 2021): 353–58. http://dx.doi.org/10.4028/www.scientific.net/ssp.316.353.

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Aluminum is widely used in various industries in the form of alloys due to its unique properties - lightness, high electrical conductivity, and corrosion resistance. However, when casting alloys, various defects arise, the main of which are nonconformities of the ingot chemical composition, mechanical properties, and internal structure. The RUSAL Bratsk PJSC (, Irkutsk Region) aluminum alloy samples have been examined for pores, cracks, and oxide films. The causes of their occurrence have been analyzed and ways to eliminate these defects proposed. It has been found that, with increasing hydrogen content in the melt, micro-porosity leads to friability and macro-porosity of the alloy structure. According to the study results, the likelihood of cracks in the ingots could be reduced by evenly decreased metal temperature and casting velocity. The oxide film defects have been eliminated by feeding metal into the mold in a steady turbulence-free manner, increasing the metal settling time in a mixer, and reducing the alloy preparation time in a furnace.

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Kulkarni, G. J., D. Banerjee, and T. R. Ramachandran. "Physical metallurgy of aluminum-lithium alloys." Bulletin of Materials Science 12, no. 3-4 (September 1989): 325–40. http://dx.doi.org/10.1007/bf02747140.

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Rusin, N. M., and A. L. Skorentsev. "Tribotechnical Properties of Sintered Aluminum Alloys." Applied Mechanics and Materials 682 (October 2014): 9–13. http://dx.doi.org/10.4028/www.scientific.net/amm.682.9.

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The frictional behavior of sintered composite materials based on aluminum with high content of solid intermetallics and soft tin was investigated. It was found that at the moderate pressures and in absence of a liquid lubricant, both types of composites exhibit a low friction coefficient and good wear resistance.

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Shneider, G. L., and A. M. Drits. "Hardenability of aluminum-lithium alloys." M Science and Heat Treatment 37, no. 9 (September 1995): 373–77. http://dx.doi.org/10.1007/bf01156813.

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Zakharov, V. V., Yu A. Filatov, and I. A. Fisenko. "Scandium Alloying of Aluminum Alloys." Metal Science and Heat Treatment 62, no. 7-8 (November 2020): 518–23. http://dx.doi.org/10.1007/s11041-020-00595-0.

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Journal articles on the topic 'Aluminum alloys. Aluminum Materials'

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