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WANG Houqin, HAN Ke, ZHANG Binggang, LI Yuxuan. Investigation on the microstructure and mechanical properties of high-Nb TiAl/Ti600 alloy electron beam welded joints[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2017, 38(6): 96-100.
Citation: WANG Houqin, HAN Ke, ZHANG Binggang, LI Yuxuan. Investigation on the microstructure and mechanical properties of high-Nb TiAl/Ti600 alloy electron beam welded joints[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2017, 38(6): 96-100.
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Investigation on the microstructure and mechanical properties of high-Nb TiAl/Ti600 alloy electron beam welded joints

  • State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China

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  • Received Date: May 05, 2016
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    • Abstract
  • The electron-beam welding of high-Nb TiAl/Ti600 alloy was investigated in this paper to provide theoretical and experimental basis for the high-quality welding of high-Nb TiAl/Ti600. In this paper, optical microscopy, scanning electron microscopy and X-ray diffraction equipment are used to analyze the welding samples. The results showed that the joint was susceptible to solid-state cracking. Owing to fast cooling rate of electron beam welding, the acicular α2-Ti3Al phase and a little α-Ti phase were formed in the FZ (fusion zone), while the HAZ (heat affected zone) of high-Nb TiAl was composed of laths and equiaxial microstructure, and the acicular α'phase precipitated from the HAZ of Ti600 alloy. The joint exhibited a peak value in micro-hardness that occurred at the far end of FZ near the fusion line of high-Nb TiAl alloy and the hardness decreased from the weld seam to the both sides of base metals. The ultimate tensile stress of the as-welded specimen was 516 MPa, and the fracture occurred at the FZ on the side of TiAl alloy. It exhibited brittle cleavage fracture mode and also presented a characteristic of transgranular fracture.
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  • 姜旭峰, 彭著良, 费逸伟. 航空发动机减重技术研究[J]. 航空维修与工程, 2005 (1): 54-56. Jiang Xufeng, Peng Zhuliang, Fei Yiwei. The study on aero-engine reducing weight techniques[J]. Engineer & Technology, 2005(1): 54-56.
    Kim B G, Kim G M, Kim C J. Oxidation behavior of TiAl-X(X=Cr, V, Si, Mo or Nb) intermetallics at elevated temperature[J]. Scripta Metallurgica et Materialia, 1995, 33(7): 1117-1125.
    陈国良, 林均品. 有序金属间化合物结构材料物理金属学基础[M]. 北京: 冶金工业出版社, 1999.
    何 鹏, 冯吉才, 韩杰才, 等. TiAl金属间化合物及其连接技术的研究进展[J]. 焊接学报, 2002, 23(5): 91-96. He Peng, Feng Jicai, Han Jiecai, et al. Advances in TiAl intermetallics and its joining technology(Ⅱ)-advances in TiAl intermetallics[J]. Transactions of the China Welding Institution, 2002, 23(5): 91-96.
    陈国庆. TiAl金属间化合物电子束焊接接头组织及防裂纹工艺研究[D]. 哈尔滨:哈尔滨工业大学, 2007.
    张秉刚, 陈国庆, 何景山, 等. Ti-43Al-9V-0.3Y/TC4 异种材料电子束焊接 (EBW)[J]. 焊接学报, 2007, 28(4): 41-44. Zhang Binggang, Chen Guoqing, He Jingshan, et al. Electron beam welding of dissimilar metal between Ti-43Al-9V-0.3Y and TC4[J]. Transactions of the China Welding Institution, 2007, 28(4): 41-44.
    Mallory L,Baeslaek ш W, Philips D. Evolution of the weld heat-affected zone microstructure in a Ti-48Ai-2Cr-2Nb gamma titanium aluminide[J]. Journal of Materials Science Letters, 1994, 13(14): 1061-1065.
    Chaturvedi M C, Richards N L, Xu Q. Electron beam welding of a Ti-45Al-2Nb-2Mn+0.8 vol.% TiB2 XD alloy[J]. Materials Science and Engineering: A, 1997, 239: 605-612.
    黄伯云, 李成功, 石力开, 等. 中国材料工程大典有色金属材料工程[M]. 北京: 化学工业出版社, 2006.
    张永刚. 金属间化合物结构材料[M]. 北京: 国防工业出版社, 2001.
    吴会强, 冯吉才, 何景山, 等. 电子束焊接TiAl基合金接头组织结构及其裂纹产生的敏感性[J]. 材料工程, 2005(4): 7-10. Wu Huiqiang, Feng Jicai, He Jingshan, et al. Structure and crack forming susceptibility of TiAl based alloy joints by electron beam welding[J]. Journal of Materials Engineering, 2005(4): 7-10.
    张喜燕, 赵永庆, 白晨光. 钛合金及应用[M]. 北京: 化学工业出版社, 2005.
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