Effect of YF3 on weld microstructure and performance of titanium
alloy TC4 in TIG welding
alloy TC4 in TIG welding
(State Key Laboratory of Advanced Welding Production Technology,
Harbin Institute of Technology, Harbin 150001, China)
Harbin Institute of Technology, Harbin 150001, China)
Abstract: The effect of additive YF3 on weld microstructure and mechanical performance of titanium alloy TC4 in Activating Tungsten Inert Gas (A-TIG) welding was experimentally investigated. The results show that the weld grains of titanium alloy were refined after introducing the YF3 into the weld in A-TIG welding. This would achieve the better weld mechanical properties in comparison to that of welds by the conventional TIG welding.
Key words: TIG welding; titanium alloy; microstructure; mechanical performance