Effect of applied load and grit size on wear coefficients of Al 6082-SiC-Gr hybrid composites under two body abrasion

The effect of applied load and grit size on two body abrasive wear coefficients of Al 6082-5%SiC-5%Gr hybrid composites was evaluated under pin on disc equipment at 5-15 N load, 100-200 mu m grit size and 75 m sliding distance. At lower load and higher grit size, the wear coefficient decreases from #6;0.771 x 10(-3) to 0.547 x 10(-3) in cast condition; 0.73 x 10(-3) to 0.642 x 10(-3) in T6 condition when compared alloy to hybrid composite respectively. But at higher load and grit size, the wear coefficient marginally decreased from 0.48 x 10(-3) to 0.46 x 10(-3) in cast condition; 0.497 x 10(-3) to 0.42 x 10(-3) in T6 condition respectively. The wear coefficients decreased and increased with increase in load and grit size respectively. The investigation on worn surfaces was done to understand wear mechanism. (C) 2016 Elsevier Ltd. All rights reserved.