2012•Hangkong cailiao xuebaoOpen access
Microstructure and Properties of T-structure Joints by Single Pass Welding and Double Backside Shaping on Titanium Alloy
Liqun Li
Open full text 0 citations
Abstract
T-structure parts of titanium alloy are single pass welded and double backside shaped,respectively by TIG welding and laser-TIG hybrid welding.The microstructure,tensile,bending and fatigue performance of the two methods have been tested comparably.The results show that the tendency of grain growing in the weld vicinity and HAZ is much lesser.The bending strength of laser-TIG hybrid welding is obviously higher than that of TIG welding.The fatigue life of laser-TIG hybrid welding joint is 50% more than that of TIG welding joint.So,the general performance of laser-TIG hybrid welding joint is better than that of TIG welding.