THE SLIDING WEAR BEHAVIOUR OF Al-SiC PARTICULATE COMPOSITES--II. THE CHARACTERIZATION OF SUBSURFACE DEFORMATION AND CORRELATION WITH WEAR BEHAVIOUR

摘要

The purpose of this paper is to provide a deeper understanding of the wear behaviour of Al-SiC particulate composites through a detailed examination of the subsurface regions beneath the worn surface and the debris. Such an examination indicates that the subsurface deformed layer beneath the worn surfaces of Al-MMC pins is composed of a number of distinct layers like the mechanically mixed layer (MML), the shear deformed and bulk deformed layers. The MML is absent in A1 samples. The thickness of each of these layers is dependent on both the volume fraction of SiC and the test loads.