Wear Behaviour of Al 6061-SiC-Gr Hybrid Composites

Al6061 matrix hybrid composites reinforced with Silicon carbide and Graphite particles were manufactured by liquid metallurgy route.Tribological properties of both matrix alloy and developed hybrid composites have been evaluated.Dry sliding friction and wear tests were carried out using pin on disk type machine over a load range of 10-40N and sliding velocities of range 0.3-1.2m/s.Results revealed that, Al6061-SiC-Gr hybrid composite exhibited lower wear rate compared to matrix alloy.Wear rates of both matrix alloy and developed composites increased with increase in load and wear rate of the matrix alloy increased with increase in sliding velocity.However, for the hybrid composites the wear rate increased initially upto a sliding velocity of 0.9 m/s and thereafter there was a decrease in wear rate.