Analysis of T-joint weld shaping characteristics and influencing factors by laser-TIG hybrid welding titanium alloy

作者：Wang, Min^*; Gu, Kanfeng; Wei, Qiang; Yu, Ying; Wu, Lin; Chen, Yanbin

来源：Transactions of the China Welding Institution, 2010, 31(12): 105-108.

• Forming properties
• Hybrid welding
• Laser-TIG hybrid welding
• Shaping technologies
• T joints
• Testing conditions
• Weld forming
• Weld microstructures

A new laser-TIG (laser beam and tungsten inert gas) hybrid welding procedure for titanium alloy T-joint structure called single pass welding and double backside shaping technology is proposed. The forming properties of the T-joint structure is analyzed and discussed under different testing conditions by a series comparative welding experiments to reveal the optimal scheme of single pass welding and double backside shaping with laser-TIG hybrid welding for titanium alloy T-joint structure. The results indicate that comparing with the TIG melt through welding methods, the proposed single pass welding and double backside shaping technology based on laser-TIG hybrid welding procedure for titanium alloy T-joint structure is obviously advantageous in weld forming, weld microstructure, weld composition, weld property, welding efficiency and the tolerance to gaps between plates.

• 出版日期2010-12