Interior defect-induced crack initiation mechanism and initial growth behavior for Ti6Al4V alloy fabricated using laser powder bed fusion

• Main Authors: Liu, Fulin, Chen, Yao, Li, Lang, Wang, Chong, Wang, Qingyuan, Liu, Yongjie
• Other Authors: School of Mechanical and Aerospace Engineering
• Format: Article
• Language: English
• Published: 2023
• Subjects: Engineering::Mechanical engineering; Laser powder bed fusion; Very High Cycle Fatigue
• Online Access: https://hdl.handle.net/10356/169764
• Institution: Nanyang Technological University

The interior defect-induced crack initiation mechanism and early growth behavior of Ti6Al4V alloy fabricated by laser powder bed fusion (LPBF) has been investigated in very high cycle fatigue (VHCF) regime. P-S-N curves under 10% and 90% failure probabilities are obtained in VHCF regime. The cracks...