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Stir casting for HMMC fabrication is known to defeat the defects that acquire during the conventional casting processes. The near-net shape manufacturing ability and potential to yield higher hardness are the capability of the stir casting provided technical parameters are accurately controlled. In this research, optimization technique for stir casting process parameter is established by Taguchi technique to explore the correlation among the hardness and tensile strength. Three different process parameters namely melt temperature, die temperature and stir pressure, were selected to perform the experiments using L9 orthogonal array. The composites obtained for optimum cast conditions were melting temperature 750 oC, stirrer speed 500RPM and stirrer duration 7 min exhibited better hardness and tensile strength. The identified process parameters provide a favorable condition for processing the alloys directly on the melt up to the time of complete solidification. The results indicate that there exists a strong correlation between hardness and tensile strength.

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