Processing of AZ91D Magnesium Alloy by Laser Powder Bed Fusion

Magnesium alloys are perspective materials for use in transportation, aerospace and medical industries, mainly because of their good load-to-weight ratio, biocompatibility biodegradability. For the effective production magnesium components by laser powder bed fusion (LPBF) process, process parameters with verified mechanical properties need to be determined. In this paper, we prepared bulk samples a high relative density AZ91D alloy. Tensile tests were then performed on LPBF evaluate properties. Our results show that achieved >99%, multiple planes over full sample height, while reached values YS = 181 MPa, UTS 305 MPa A5.65 5.2%. The analysis scanning electron microscope revealed fine β-Mg17Al12 particles microstructure, which have positive effect chemical composition alloy changed slightly during processing due evaporation Mg content. However, resulting still corresponds range specified ASTM standard