TA15 合金电子束嵌入法焊接接头的力学性能 - 中国有色金属学报.PDF

20 1 2010 10 Vol.20 Special 1 The Chinese Journal of Nonferrous Metals Oct. 2010 1004-0609(2010)S1-s0152-04 TA15 1, 2 2 2 1 1 (1. 100124 2. 100024) 50% TG 46.7 A Mechanical properties of TA15 titanium alloy weld-joints by embedded electron beam weld 1, 2 2 2 1 1 LI Jin-wei , TANG Zhen-yun , GUO Guang-yao , HU Wei , ZHANG Yi-liang (1. College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100124, China; 2. National Key Laboratory of Science and Technology on Power Beam Processes, Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, China) Abstract: The embedded electron beam welding is a process that inserts transition metals to accomplish the electron beam welding. It changes alloy composition of welds and controls the uniformity of alloy composition, thus improves the mechanical properties of TA15 titanium alloy electron beam welded joint. The welded joint strength is almost the same as that of base metal. The impact toughness is improved by 50% as compared with the traditional electron beam welding, and the dispersion of fatigue life prediction of weld-joints decreases significantly. Key words: titanium alloy embeded methoded; electron beam weld TA15 Al α α α+β [1] [2] 500 TA15 1 TA15