Effects of sub-atmospheric pressure on keyhole dynamics and porosity in products fabricated by selective laser melting

• Main Authors: Tan, Pengfei, Kiran, Raj, Zhou, Kun
• Other Authors: School of Mechanical and Aerospace Engineering
• Format: Article
• Language: English
• Published: 2021
• Subjects: Engineering::Mechanical engineering; 3D Printing; Selective Laser Melting
• Online Access: https://hdl.handle.net/10356/154124
• Institution: Nanyang Technological University

A powder-scale multi-physics model is developed to investigate the keyhole dynamics and porosity in products fabricated by selective laser melting (SLM) under the sub-atmospheric pressure. The effects of the sub-atmospheric pressure on the plume attenuation of the laser beam, vaporization temperatur...