The Influence of Laser Shock Processing to TC4 Titanium Alloy TIG Welding Bead Microstructure and Properties
TC4 titanium tungsten inert gas arc (TIG) weld beads were treated by laser shock processing (LSP) technology. After a single or multiple times LSP, surface hardness, tensile mechanical properties and fatigue life of those weld joints were measured. The results showed that: compared with TC4 titanium alloy TIG joints without LSP treatment, those weld beads surface hardness on weld zone and heat affected zone are nearly uniform. The fatigue life of those TC4 TIG weld joints treated by a single time LSP process. With the LSP times increased, TC4 titanium alloy weld beads tensile strength and yield strength are not obviously change. Elongation of those joints is decreased at LSP treatment times that ranged from one to three. The special elongation of these welding joints treated by different times LSP treatment will be influenced observably. The welding joint special elongation was reduced to the least degree for three times LSP treatment had been introduced.
laser shock processing titanium alloy hv hardness tensile properties fatigue life
H.Y.Xu Z.G.Che S.K.Zou Z.W.Cao
Science and Technology on Power Beam Processes Laboratory,Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, China
国际会议
北京
英文
254-258
2010-10-25（万方平台首次上网日期，不代表论文的发表时间）