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Effect of Composition, Particle Size, and Heat Treatment on the Mechanical Properties of Al-4.5 wt.% Cu Based Alumina Particulate Reinforced Composites
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Abstract
The quest for higher efficiency and performance of automotive vehicles requires application of materials with high strength, stiffness and lower weight in their construction. Particulate-reinforced aluminum-matrix composites are cost-competitive materials, which can meet these requirements. MMCC, Inc. has been optimizing particulate-reinforced alloy systems and developing the Advanced Pressure Infiltration Casting (APIC™) process for the manufacture of components from these materials. This paper discusses the results of a recent study in which composites reinforced with 55 vol.% alumina were cast using two sizes of alumina particulate and eight different matrix alloys based on Al-4.5 wt.% Cu with varying amounts of silicon and magnesium. Optimum heat treatments for each alloy were determined utilizing microhardness studies. The tensile strength and fracture toughness were evaluated as a function of alloy chemistry, particulate size, and heat treatment. MMCC has used one of these composite materials, 2214/Al203-55p/T6, to cast composite brake calipers and connecting rods that provide significant weight savings over their ferrous counterparts.
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Seleznev, M., Argon, A., Seleznev, I., Cornie, J. et al., "Effect of Composition, Particle Size, and Heat Treatment on the Mechanical Properties of Al-4.5 wt.% Cu Based Alumina Particulate Reinforced Composites," SAE Technical Paper 980700, 1998, https://doi.org/10.4271/980700.Also In
References
- Seleznev M.L. Cornie J.A. Mason R.P. Ryals M.A. Proceedings of AlumiTech’97 Conference 204 206 Aluminum Association May 20-23 1997 Atlanta, Georgia
- #5322109 June 21 1994
- Suresh S. et al. Fundamentals of metal-matrix composites Edited by Suresh S. Mortensen A. Needle-man A. 119 138 Butterworth-Heinmann 1993
- Mondolfo L.F. Aluminum Alloys: Structure and Properties Butterworths 1976 971
- Llorca J. Acta Metallurgica et Materiala 43 1995 1 181 192 1995
- Yang J.Y. et al. Processing, Properties and Applications of Cast Metal Matrix Composites Edited by Rohatgi. P.K. 77 92 The Minerals, Metals & Materials Society 1996
- Cooper G.A. et al. Journal of the Mechanics and Physics of Solids 15 1967 279 289