CORROSION BEHAVIOR OF ALSI10MG ALLOY PRODUCED BY SELECTIVE LASER MELTING (SLM) AND CASTING METHOD DEPENDING ON HEAT TREATMENT
No Thumbnail Available
Date
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Aluminum alloys constitute an important class of metallic materials and therefore deserve somewhat more coverage in teaching Materials Science and Engineering than currently provided. As an example, we discuss below corrosion behavior, microstructural and mechanical properties of AlSi10Mg produced by selective laser melting (SLM) and casting method. Effects of a heat treatment at 300 degrees C for 5 h are discussed as well. The samples so created can be printed following instructions for printing provided in advance. Horizontal and vertical printing provides microstructural and mechanical effects depending on the direction. Electrochemical corrosion testing was performed. The microstructures were investigated using X-Ray diffractometry (XRD), Energy diffuse X-Ray analysis (EDX) and by scanning electron microscopy (SEM). Annealing heat treatment causes significant changes of the microstructure and corrosion properties. The sample produced by SLM has better corrosion resistance than the conventional cast sample. Fine microstructure and homogeneously dispersed Si particles formed during rapid solidification and cooling of the SLM process provide a better corrosion resistance than typical methods.