Effect of grit size on two body abrasive wear of Al 6082 hybrid composites produced by stir casting method

In the present work, the two body abrasive wear behavior of stir cast Al 6082-SiC-Gr hybrid composites was studied and compared with Al 6082-SiC composites and Al 6082 alloy. The experiments were carried at 5-15 N applied load, 100-200 µm grit size and 75 m sliding distance using pin-on-disc equipment. Worn surfaces of tested samples and grit papers were observed under scanning electron microscope (SEM). The wear resistance properties of Al-SiC-Gr hybrid composites was better than alloy and Al-SiC composites. At 15 N applied load and 200 µm grit size, 16.4% and 27% wear improvement of Al-SiC-Gr composite was observed in cast and T6 heat treated condition respectively whereas 19.6% and 26.9% wear improvement was observed when tested on 100 µm grit size.