Microstructure, wear and residual stresses of selective laser melting AlSi10Mg solid cylinder

Abstract

Advanced industrial processing technique selective laser melting (SLM) can handle various materials. Although titanium alloys are the main material used in SLM, aluminium alloys may be employed in the future. However, producing aluminium alloys is more complicated. This work uses SLM to make an AlSi10Mg solid cylinder. The aim is to study the mechanical properties and microstructure of products. Layer thickness increases defects; thus, research advises avoiding it. The optical microscope study proved the conduction melting process's stability and hole-freeness. EDX mapping and SEM were used to compare the chemical makeup of as-cast and SLM materials. An unusual microstructure showed consistent alloying component distribution. Investigations examine wear, hardness and residual stresses. Extreme hardness was found. The component has evenly distributed compressive residual stresses within material yield limits.