Abstract

Aluminum 6061 alloys have been proposed for extensive use in automotive engine applications and there have been discrete cases of experimental implementation. In order to enhance the usability of this material, it has been investigated in composite forms with various ceramic reinforcements. Viability of the different constituents depends on the compatibility of their physical and chemical properties. In this present investigation efforts are made to study the mechanical properties of Al6061 alloy reinforced with granite particulate of 2-3 microns size in different compositions. The vortex method of stir casting was employed, in which the reinforcements were introduced into the vortex created by the molten metal by means of mechanical stirrer. Castings were machined to the ASTM standards on a highly sophisticated lathe. An improved mechanical properties are occurs on reinforced compared to unreinforced Metal Matrix Composites (MMCs).

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