Microstructure and Mechanical Behavior of SiC Reinforced Aluminum Metal Matrix Composites for Automobile Applications
Published April 28, 2014 by The Automotive Research Association of India in India
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Aluminium metal matrix composites (MMC) are one of the most promising engineering materials being increasingly used in automobile industries for critical applications due to their enhanced mechanical and physical properties. In this present study, A356 aluminum alloy reinforced with SiC particle was made by stir casting process. The effects of different volume fractions of SiC particle reinforcement on microstructure and mechanical properties have been investigated. The yield and fracture strength increases with increase in volume fraction of SiC particulates, while ductility decreases. As compared to base alloy, 20% volume fraction of SiC reinforced composites showed 16% increase in tensile strength. Dislocation density, precipitation hardening and changes in grain size are the main mechanisms enhancing the mechanical properties of particulate reinforced composites.
CitationSharma, S., Dhanasekaran, S., and Sreenivasan, V., "Microstructure and Mechanical Behavior of SiC Reinforced Aluminum Metal Matrix Composites for Automobile Applications," SAE Technical Paper 2014-28-0026, 2014, https://doi.org/10.4271/2014-28-0026.
- Vencl A et al., “Structural, mechanical and tribological properties of A356 aluminium alloy reinforced with Al2O3, SiC and SiC + graphite particles”, J Alloys Compd, Vol 9, 506:631, 2010.
- Yung C.K and Chan S.L.I., “Tensile Properties of Nanometric Al2O3 Particulate Reinforced Aluminium Matrix Composites”, Journal of Materials Chemistry and Physics, Vol. 85, 438-443, 2004.
- Sajjadi SA, Ezatpour HR, Beygi H, “Microstructure and mechanical properties of Al- Al2O3 micro and nano composites fabricated by stir casting”, In: Proceedings of 14th national conference on Materials Science and Engineering, Tehran, Iran. 325, 2010.
- Chawla N and Shen Y.L, “Mechanical Behavior of Particle Reinforced Metal Matrix Composites,” Advanced Engineering Materials, Vol. 3, 357-370, 2001
- Sajjadi SA et al., “Fabrication of A356 composites reinforced with micro and nano Al2O3 particles by a developed compo-casting method and study of their properties”, J Alloys Compd, accepted for publication, 2011.
- Sajjadi S.K. and Zebarjad S.M., “Powder Metallurgy”, Vol. 8, 71-78, 2010.
- Nair S.V, Tien J.K, Bates R.C, “SiC-reinforced aluminum metal matrix composites,” International material reviews, 1985; 30(1):275-290.
- Feng HB, Zhou Y, Jia DC, Meng QC, “Microstructure and mechanical properties of in situ TiB reinforced titanium matrix composites based on Ti-FeMo-B prepared by spark plasma sintering,” Compos Sci Technol, 2004; 64(16):2495-500.
- England J, Hall IW, “On the effect of strength of the matrix in metal matrix composites,” Scripta Metall 1986; 20: 697-700.
- Delannay F, Froyen L, Deruyttere M, “Review: The wetting of solids by molten metals and its relation to the preparation of metal-matrix composites,” Journal of Materials Science, 1987, 22: 1'16.
- Rajan T.P.D, Pillai R.M, Pai B.C, “Review: Reinforcement coatings and interfaces in aluminum metal matrix composites,” Journal of materials science, 1998, 33: 3491-3503.