Materials science has developed rapidly during the last quarter century to meet the needs for better materials to provide higher standards of performance and reliability in service in machines, structures, and vehicles. But its main support has come from the newer technologies associated with aircraft, missiles and space research, high-speed flight, nuclear engineering, computers, electronics, and control engineering. From these fields have come demands for materials to withstand conditions not previously experienced by man-made components and to perform functions not previously envisaged. Some of these requirements were able to be met by improvements in existing methods of manufacture and treatment of well-tried materials, but for others, rule-of-thumb methods were quite unsatisfactory and it was recognized that a new fundamental approach to materials was essential.Metal matrix composites constitute a new class of materials, now starting to make a major industrial impact in fields as diverse as aerospace, automotives and electronics and moderately high-temperature applications, a number of materials are being investigated for very high-temperature structures, such as combustion sections in jet engines etc. In the present work, an attempt has been made to fabricate an aluminum metal matrix composite containing  aluminium A356 and SiC and Mg as reinforced in metal matrix. The composite specimen is manufactured by friction stir casting method. Investigation of the mechanical properties involves the determination of tensile strength, hardness test and impact strength.

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Tue, 19/04/2011 - 21:30