Influence of Microstructure on Abrasive Wear Resistance of Al-12 wt% Si Alloy


Abrasive wear of as-cast Al-12 wt% Si alloy has been slid against SiC emery papers(grits 120 and 220). The wear rate and wear mechanism as a function of bearingpressure have been studied. The wear rate increased considerably with increasing thesize of abrasive material. Detailed analysis of worn surface showed the formation ofscratches and removal of debris particles by mechanism depended highly on bearingpressure and to less extent on emery paper. Increasing the bearing pressure resulted inthe formation of debris without plastic deformation of the subsurface.