Effect of Reinforcements and Abrasive Size on High-Stress Tribological Behaviour of Aluminium Piston Matrix Composites

Abstract

The aim of this research paper was to look into the high-stress abrasive or sliding wear of the LM13 and ADC12 alloy and its composites as LM13-7% SiC, LM13-7% TiB2, ADC12-7% SiC and ADC12-7% TiB2 reinforced with SiC and TiB2 particles. The high-stress abrasive test was examined at various emery grit meshes as 180, 220, 320 and 400 correspond to 88, 60, 44 and 37 micron, and a load of 20 N and 30 N was applied for scratching distance of 200 m and 300 m at a sliding speed of 5.2 m/s. Smooth wear track or channel was shown in case of alloys. Wider and discontinuous wear tracks were depicted in case of composites due to inclusion of strengthen particles. Alloys showed less frictional heating as compared to their composites and among composites titanium diboride amalgam showed more frictional heating as compared to silicon carbide strengthen composites. There was rapid increase in frictional heating in composites as compared to alloys due to presence of hard particles. Frictional heating increased on inclusion of ceramic particles. Experiment result showed that titanium diboride composites in aluminium base alloy considered excellent material for tribological and general purpose engineering application.