DRY SLIDING WEAR BEHAVIOR OF HYBRID METAL MATRIX COMPOSITES

Abstract

This investigation reveals the wear behaviour of as cast aluminium alloy, aluminium alloy reinforced with SiC particles and aluminium alloy reinforced with SiCp–Graphite. Both the composites are fabricated using liquid metallurgy route. The unlubricated pin-on disc wear tests were conducted to examine the wear behaviour of the aluminium alloy and its composites. The sliding wear tests were conducted at various loads, speeds and sliding distances. The result reveals that wear rates of the Graphitic composite is lower than that of the matrix alloy and SiCp reinforced composite. The wear rate has been increased with the increasing load and decreased with increasing speed up to 4.6 m/s and then increased. The tested samples were examined using scanning electron microscope and analyzed. Keywords: metal matrix composites, wear, wear parameters, abrasion, delamination.