Enhancing the mechanical properties of electron beam welded TC17 titanium alloy joint by post-weld heat treatment

• Published in: Journal of alloys and compounds Vol. 810; p. 151937
• Main Authors: Liu, Hanqing, Wang, Haomin, Zhang, Zhen, Huang, Zhiyong, Liu, Yongjie, Wang, Qingyuan, Chen, Qiang
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 25.11.2019; Elsevier BV
• Subjects: Beta phase; Coarsening; Cooling rate; DIC; Electron beam welding; Electron beams; Equiaxed and columnar β grains; Fatigue failure; Fatigue life; Fatigue strength; Heat affected zone; Heat treating; Lamella; Lamellar structure; Mechanical analysis; Mechanical properties; Microhardness; Post-weld heat treatment; Recrystallization; Stress ratio; TC17 titanium alloy; Tensile and fatigue behavior; Titanium alloys; Titanium base alloys; Welded joints; Equiaxed and columnar β grains; Electron beam welding; Tensile and fatigue behavior; Post-weld heat treatment; TC17 titanium alloy; DIC

Supersaturated coarsening β phase and submicron acicular martensitic α′ phase originated by the high cooling rate during the welding process resulted in the electron beam welded TC17 titanium weldment to be poor in strength and ductility. Post-weld heat treatment was performed at 630 °C for 2 h to i...