Abstract
In this study, mechanical and wear behaviors of aluminum silicon alloy and its composites reinforced with graphite (3 wt.%) particulates have been investigated. In order to improve the wettability of graphite with matrix alloy, graphite particulates were ball milled with Cu and Ni by weight percent (1% each) and preheated to 400°C and then incorporated into the molten metal. Tensile properties of composites were better than those of the matrix alloys. Wear rate of composites was lower than that of matrix alloys for given applied stress and varying sliding distance. The wear mechanism was understood from the scanning electron microscopic images of worn-out surfaces and wear debris.
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