Effect of ZrSiO4 particles on the wear properties of as-cast Al matrix particulate composites fabricated via various casting routes

Document Type: Research Paper

Authors

1 Department of Materials Engineering, Faculty of Engineering, University of Sistan and Baluchestan

2 University of Sistan and Baluchestan

10.22104/jpst.2020.3856.1159

Abstract

This study deals with the effects of ZrSiO4 particles addition on the abrasive wear behavior of aluminum based metal matrix composites. The Al-A356/5 vol.% ZrSiO4 specimens were prepared by the injection of particles in the as-received form or Al-ZrSiO4 milled composite powder. Injection of composite powder caused remarkable improvement in ZrSiO4 distribution within the Al-356 matrix alloy. The composites were fabricated by two different routes of semisolid-liquid state (SL) and liquid-liquid state (LL). According to the results, when the stirring was conducted in the semi-solid state, a better distribution of reinforcing particles was observed. Based on the wear test results, the A356/(Al-ZrSiO4)cp composite processed in the SL state exhibited the highest wear resistance in terms of wear rate and friction coefficient. The worn surfaces of specimens were examined to identify the possible mechanisms.

Keywords

Main Subjects