Influence of Postweld Heat Treatment on Microstructure and Mechanical Properties of TIG Welded Joint of TD3 Alloy
LIU Wei-hong1,2, CAO Chun-xiao1, LI Yan1, MAO Wei1, LI Xiao-hong1
1. Beijing Institute of Aeronautical Materials, Beijing 100095, China; 2. School of Materials Science and Engineering, Jilin University, Changchun 130025, China
Abstract:TD3 alloy was welded by Tungsten Inert Gas(TIG)welding with a Ti-Al-Nb based alloy filler.The microstructure and mechanical properties of the base metal and the joint under postweld aging treatment condition and postweld solution plus aging treatment condition were investigated.The results showed that postweld solution plus aging treatment was relatively suitable for the joint.Heat affect zone and weld had the lowest tensile strength at room temperature and at 650℃,respectively.Due to the coarsening of the plated phase,the mechanical properties of the base metal with postweld solution plus aging treatment were lower than those with postweld aging treatment.
刘卫红, 曹春晓, 李艳, 毛唯, 李晓红. 焊后热处理工艺对TD3合金钨极氩弧焊接头显微结构与力学性能影响[J]. 材料工程, 2008, 0(1): 68-72.
LIU Wei-hong, CAO Chun-xiao, LI Yan, MAO Wei, LI Xiao-hong. Influence of Postweld Heat Treatment on Microstructure and Mechanical Properties of TIG Welded Joint of TD3 Alloy. Journal of Materials Engineering, 2008, 0(1): 68-72.
[1] 曹京霞,孙福生,曹春晓,等.Ti3Al基合金研究进展[J].材料工程,2001,(增刊):90-92. [2] 张永刚,韩雅芳,陈国良,等.金属间化合物结构材料[M].北京:国防工业出版社,2001. [3] 彭超群,黄伯云,贺跃辉.Ni-Al系、Fe-Al系和Ti3Al金属间化合物研究进展[J].特种铸造及有色合金,2001,(6):27-29. [4] 任家烈,吴爱萍.先进材料的连接[M].北京:机械工业出版社,2000. [5] 刘博,武英,周朝霞,等.Ti-23Al-14Nb-3V合金氩弧焊接头的显微组织及其力学性能[J].材料科学与工艺,1997,5(1):45-49. [6] REDDY G M,MOHANDAS T,CHANDRESHEKAR K.Observations on welding of α2+O+β titanium aluminide[J].Science and Technology of Welding and Joining,2001,6(5):300-304. [7] SAMUEL CHRISTY.A study of the weldability of alpha-2 titani um aluminide[D].USA:University of Cincinnati,1995. [8] 刘卫红,李艳,毛唯,等.Ti-24Al-15Nb-1Mo合金氩弧焊[J].航空材料学报,2005,26(3):111-115.