Mechanical Properties of High Mg-Content Al-Mg-Sc-Zr Alloy Fabricated by Selective Laser Melting

The effects of process parameters and aging treatment on the microstructure mechanical properties selective laser melting (SLM) fabricated high Mg-content Al-Mg-Sc-Zr aluminum alloy were systematically studied. Our experiment results show that samples exhibit good processability with porosity less than 1%. increase Mg content in is beneficial to reduce texture alloy. scanning speed has a large influence Vickers hardness as-fabricated samples. maximum microhardness sample reaches 148 ± 2 HV compression yield strength 342 7 MPa. After treatment, distinction obtained under different obviously reduced, are further improved 175 5 compressive 476 10 MPa, which superior known same Sc Zr by SLM. In this study, novel specifically for SLM was reported.