Author : Shaik Ismail Basha 1
Date of Publication :17th May 2017
Abstract: Metal Matrix Composites (MMCs) have evoked a keen interest in recent times for potential applications in aerospace and automotive industries owing to their superior strength to weight ratio and high temperature resistance. To achieve these objectives two step-mixing method of stir casting technique has been adopted and subsequent property analysis has been made. Aluminum (Al 2024 ) and SiC (150 μm) has been chosen as matrix and reinforcement material respectively. The present study was aimed at evaluating the physical properties of Aluminum in the presence of silicon carbide at varying compositions. Consequen tly aluminum metal matrix composite combines the strength of the reinforcement with the toughness of the matrix to achieve a combination of desirable properties not available in any single conventional material. The compositions were added up to the ultimate level and stir casting method was used for the fabrication of aluminum metal matrix composites. Experiments have been conducted by varying weight fraction of SiC (5%, 10%, 15%, 20%, 25%), while keeping all other parameters constant. The results were evaluated by Tensile Test, Rockwell Hardness Test, Charpy Impact Test (including micro-structure), Compression Test and Heat Treatment In terms of a metal-matrix composite, an Aluminum 2024 alloy as the matrix and silicon carbide as the reinforcement is considered to be an excellent structural material used in both the aeronautic/aerospace industry and also the automotive industry. This is due to its high strength-to-weight ratio and its high thermal conductivity.
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