WEAR CHARACTERIZATION OF AlSi10Mg ALLOY MANUFACTURING BY SLM PROCESS

Abstract

In this Project, the wear and mechanical properties of an AlSi10Mg alloy made by selective laser melting (SLM) were studied. The given
process parameter influence of laser power energy densification behaviour and the effect of as build conditions on wear characterization were
investigated. However, the wear and mechanical properties of the AlSi10Mg alloy showed better results than the Al6061-cast alloys. The SLM
printed parts qualified for a structural geometric change from using the standard powder particle morphology (powder particle distribution
range of 20 to 63 μm). The highest AlSi10Mg theoretical density of 2.67 g/cm3 and after SLM manufactured parts density was achieved by
99.6%. The laser energy density was calculated based on the given process parameter as 150 J/mm3. The results obtained showed that the
AlSi10Mg alloy had the lowest wear (both as built conditions) compared to the cast Al6061 material. Finally, at 200 rpm with a load of 60 N, the
AlSi10Mg alloy produced the least wear rate of 1.39×10-8 mm2/N and a wear coefficient of 0.01mm2/N. The wear rate and wear coefficient
increased as the slide speed increased. The hardness of the SLM-AlSi10Mg alloy Vickers was measured at 126±5 HV (as built).