Effect of ZrSiO4 particles on the wear properties of as-cast Al matrix particulate composites fabricated via various casting routes
نویسندگان
1 Department of Materials Engineering, Faculty of Engineering, University of Sistan and Baluchestan, Zahedan, Iran
2 Department of Materials Engineering, Faculty of Engineering, University of Sistan and Baluchestan, Zahedan, Iran
doi
10.22104/jpst.2020.3856.1159چکیده
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. The injection of composite powder caused remarkable improvement in ZrSiO4 distribution within the Al-356 matrix alloy. The composites were fabricated by two different routes: semisolid-liquid state (SL) and liquid-liquid state (LL). According to the results, a better distribution of reinforcing particles was observed when the stirring was conducted in the semisolid state. Based on the wear test results, the composite with ball-milled Al-ZrSiO4 particles (A356/(Al-ZrSiO4)cp ) 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.
