Improving the mechanical properties of TIG welding Ti-6Al-4V by post weld heat treatment

• Main Authors: Yan, Guangxu, Tan, Ming Jen, Crivoi, Alexandru, Li, Feng, Kumar, Sandeep, Chia, Nicholas Chern How
• Other Authors: School of Mechanical and Aerospace Engineering
• Format: Article
• Language: English
• Published: 2018
• Subjects: TIG Welding; Mechanical Properties
• Online Access: https://hdl.handle.net/10356/88207; http://hdl.handle.net/10220/44563
• Institution: Nanyang Technological University

After several years of service under high temperatures and high pressure, the Ti-6Al-4V aero-engine components may need to be repaired by Tungsten Inert Gas (TIG) welding to prevent crack growth. However, the material properties tend to worsen after TIG welding due to residual stresses developed adj...