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. In the present study a modest attempt has been made to develop aluminium based particulates MMCs with an objective to develop a conventional low cost method of producing MMCs such as Liquid state process and in powder metallurgy process. Here the reinforcement material used is tungsten carbide which has excellent high temperature strength and good corrosion resistance, being chemically and thermally very stable even at the high temperature. Major fact is that tungsten carbide used for reinforcement is in Nano size.  In order to increase the mechanical properties we are going to develop aluminium based tungsten carbide composites and to study the mechanical properties of these composites for various compositions. The addition of a small amount of tungsten carbide Nano reinforcements has a high potential to further strengthen aluminium alloy. However, the clustering of reinforcements in the matrix will detrimentally affect the strength and ductility of the alloy. Cold upsetting experiments were carried out on sintered aluminium performs in order to evaluate their work-hardening characteristics.Specimens were also prepared by varying weight fraction of particulates added with aluminium. Then the developed aluminium metal matrix composites will be characterized andultrasonic test is to be conducted. Comparing the mechanical properties of the composites developed with the pure aluminium and to recommend the composites for various applications based on the above study.

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Tue, 19/04/2011 - 21:10