Revealing hot tearing mechanism for an additively manufactured high-entropy alloy via selective laser melting

• Main Authors: Sun, Zhongji, Tan, Xi Peng, Descoins, Marion, Mangelinck, Dominique, Tor, Shu Beng, Lim, Choon Seng
• Other Authors: School of Mechanical and Aerospace Engineering
• Format: Article
• Language: English
• Published: 2020
• Subjects: Engineering::Materials; Additive Manufacturing; High-entropy Alloy
• Online Access: https://hdl.handle.net/10356/143122
• Institution: Nanyang Technological University

Hot tearing mechanisms of a high-entropy alloy CoCrFeNi additively manufactured by selective laser melting have been investigated. Intergranular hot cracks are present regardless of various parameters used, suggesting poor laser-based printability for the alloy. Elemental segregation does not exist...