Effect of SiC Particulate on Dry Sliding Wear Behaviour of Al based Forged Metal Matrix Composites

The objective of the present work is to investigate the effect of forging on the wear behaviour of Al-SiC Metal Matrix Composite at different weight percent of SiC particles. The Al-SiC composite material is fabricated by stir casting technique at 2, 4 and 6% of weight fractions of reinforcement and the casted composites were forged for different reduction ratios of 20%, 40% and 60%. Wear tests were conducted at a constant disc rotational speed of 800 rpm for 30N, 40N and 50N load and sliding distances of 1000 m, 1500 m and 2000 m. The worn out surfaces of the composite were analyzed using optical microscope. The wear rate of the forged composite showed lower values compared to the unforged composite. Increased wt. % of SiC particles in the matrix alloy enhances the wear resistance of the composite. It is also found that, wear rate is increased with the increase of load and wear track distance for all the cases.