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Characterization and Mechanical Properties of LM25-SiC Composites

Vijay Kashimatt M. G, Hemanth Kymar C.


Aluminium MMCs have excellent properties due to this they have been used widely. The LM25 can be used in Connecting rods, engine blocks and engine head. The interest in microparticles as reinforcement for Aluminium (Al) has been growing considerably due to excellent properties they possess. Efforts have been largely focused on investigating their contribution to the enhancement of the mechanical performance of the composites. The research work is carried out in the field of microparticles as reinforcements for Aluminium Matrix Composites (AMCs) to explore the possible usage to the maximum extent. In this study, Al based SiC reinforced composite materials were manufactured by stir casting. Mechanical properties were investigated. The effects of reinforcement materials on mechanical properties were investigated. In addition to that microstructures of these materials were investigated by optical microscope. Mechanical properties significantly improved by the use of SiC particle reinforced into LM25 alloy.


Aluminium matrix, reinforcement, composites, metal matrix composites, microparticles, stir casting, microstructure, hardness, ultimate tensile strength, compression strength

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Dumont D, Deschamps A, Brechet Y. On the relationship between microstructure, strength and toughness in AA7050 aluminum alloy. Materials Science and Engineering: A. 2003;356(1–2):326–36.

Li Z, Xiong B, Zhang Y, et al. Investigation on strength, toughness and microstructure of an Al–Zn–Mg–Cu alloy pre-stretched thick plates in various ageing tempers. Journal of Materials Processing Technology. 2009;209(4):2021–7.

F.L. Mathews, R.D. Rawlings. Composite materials: Engineering and Science. 3rd ed. Oxford, England: Wood head publishing Ltd;1999.

S M Lee. International Encyclopaedia of composites. 1992; 1–4:23–26.

Neitzel B, Barth M, Matic M. Weight Reduction of Disc Brake Systems with the Utilization of New Aluminum Material. SAE Technical Paper; 1994.

Zeuner T, Stojanov P, Sahm PR, et al. Developing trends in disc brake technology for rail application. Materials science and technology. 1998;14(9–10):857–63.

Dwivedi R. Development of advanced reinforced aluminum brake rotors. SAE Transactions. 1995:159–66.

Miyajima T, Iwai Y. Effects of reinforcements on sliding wear behavior of aluminum matrix composites. Wear. 2003;255(1–6):606–16.

Mortensen A, Wong T. Infiltration of fibrous preforms by a pure metal: Part III. Capillary phenomena. Metallurgical transactions A. 1990;21(8):2257–63.

Pan YM, Fine ME, Chang HS. Wear mechanism of aluminium based metal matrix composite under rolling and sliding contraction. Technology of composite material, ASM International. 1990:93–101.

Prasad SV, Rohatgi PK. Tribological properties of Al alloy particle composites. JOM. 1987;39(11):22.

Kassim S. Al-Rubaie, Humberto N. Yoshimura, Jose Daniel Biasoli de Mello. Two body abrasive wear of

Al–SiC composites. Wear. 1999;233(235):444–54.

Ceschini L, Bosi C, Casagrande A, et al. Effect of thermal treatment and recycling on the tribological behaviour of an AlSiMg–SiCp composite. Wear. 2001;251(1–12):1377–85.

Bermudez MD, Martınez-Nicolás G, Carrion FJ, et al. Dry and lubricated wear resistance of mechanically-alloyed aluminium-base sintered composites. Wear. 2001;248(1–2):178–86.

Sohn HY, Pal Dey S. Synthesis of ultrafine particles and thin films of Ni4Mo by the vapor-phase hydrogen coreduction of the constituent metal chlorides. Materials Science and Engineering: A. 1998;247(1–2):165–72.

D.M. Aylor, Metals Handbook. 1982; 9:859–863.

Wang N, Wang Z, Weatherly GC. Formation of magnesium aluminate (spinel) in cast SiC particulate-reinforced Al (A356) metal matrix composites. Metallurgical Transactions A. 1992;23(5):1423–30.

Ribes H, Suery M, L’esperance G,et al. Microscopic examination of the interface region in 6061-Al/SiC composites reinforced with as-received and oxidized SiC particles. Metallurgical Transactions A. 1990;21(9):2489–96.

Thakur SK, Dhindaw BK. The influence of interfacial characteristics between SiCp and Mg/Al metal matrix on wear, coefficient of friction and microhardness. Wear. 2001;247(2):191–201.


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