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Abstract
The aim involved in designing metal matrix composite materials is to combine the desirable attributes of metals and Ceramics. Present work is focused on the machining and preparation of AA7075/SiCp composites produced by the stir casting process by taking different Reinforcement % of SiCp by weight (0, 5, 7.5, and 10).Hardness Test and Wear test calculations performed on the samples obtained by the stir casting process. For wear testing a plan of experiment based on L16 Taguchi orthogonal array is used to acquire the wear data. Grey relational analysis approach is used for optimization of aluminium based metal matrix composite to determining metal matrix properties with certain chemical composition and identifies the most significant process parameters which will affect the properties. An analysis of variance is employed to investigate the influence of four controlling parameters, viz., SiCp content, normal load, sliding distance & sliding speed on dry sliding wear of the composites. It is observed that SiCp content, sliding distance, and Sliding Speed significantly affects the dry sliding wear while Normal Load effect on wear is almost negligible. At last the micro- structural study of the wear surface and composites indicates the nature of wear to be mostly adhesive & distribution of the particles in the composites.