Research Development and Application of Damage Tolerance Titanium Alloy
FANG Wei-ping1,2, CHEN Lun3, SHI Yao-wu1, YU Wen-jun4, MAO Zhi-yong2, TANG Zhen-yun2
1. College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China; 2. Key Laboratory of High Energy Density Beam Processing Technology, Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, China; 3. Representative Office of Naval, Chengdu Aircraft Industrial Group Co., Ltd., Chengdu 610092, China; 4. Chengdu Aircraft Industrial Group Co., Ltd., Chengdu 610092, China
Abstract：The damage tolerance titanium alloys,such as Ti-6Al-4V ELI,TC4-DT,TC21 and TA15 ELI alloys,were summarized.The development process and the new study of damage tolerance titanium alloy were introduced.It pointed out that Ti-6Al-4V ELI alloy was successfully used in the airplane manufacture industry in foreign countries.However,TC4-DT,TC21 and TA15 ELI alloys were still under research in our country.The fracture toughness and fatigue crack propagation rate properties of TC4-DT,TC21 and TA15 ELI alloys were importantly discussed in detail.The lamellar microstructure was beneficial to improve the damage tolerance properties of titanium alloys.
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2010, Vol. 0 
