Impact of layer rotation on micro-structure, grain size, surface integrity and mechanical behaviour of SLM Al-Si-10Mg alloy

• DOI: 10.1016/j.jmrt.2020.06.090
• Publication Date: 2020-07-15T16:59:31Z
• Authors: Munish Kumar Gupta; Anil Kumar Singla; Hansong Ji; Qinghua Song; Zhanqiang Liu; Wentong Cai; Mozammel Mia; Navneet Khanna; Grzegorz M. Krolczyk
• Keywords: Selective Laser Melting; Surface Integrity

Selective laser melting (SLM) is one of the appreciable technologies that directly used to manufacture intricate and highly accurate parts within short period time. However, involvement various parameters in SLM process gaining more attention scientific community. In this work, research efforts have been made emphasize on effects prominent i.e., layer rotation microstructure, grain size, surface topography, residual stresses mechanical behaviour selective melted Al-Si-10Mg alloy. The standard benchmark components were fabricated by varying values at three different angles 0°, 45° 90°. result microstructural analysis (using EBSD, SEM XRD) revealed produced cellular structure having less pores defects 90-degree angle. roughness (77.02%) also reduced with increase angle values. Furthermore, micro-hardness (upto 19.6 %), tensile strength, %elongation (87.29 %) relative density significantly enhanced higher rotations mainly due reduction porosity better interlayer metallurgical bonding.