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以Ti-Zr-Cu-Ni-Fe合金为中间层的Ti3Al/TiAl瞬间液相扩散连接

任海水, 熊华平, 陈波, 逄淑杰, 叶雷

任海水, 熊华平, 陈波, 逄淑杰, 叶雷. 以Ti-Zr-Cu-Ni-Fe合金为中间层的Ti3Al/TiAl瞬间液相扩散连接[J]. 焊接学报, 2016, 37(3): 106-110.
引用本文: 任海水, 熊华平, 陈波, 逄淑杰, 叶雷. 以Ti-Zr-Cu-Ni-Fe合金为中间层的Ti3Al/TiAl瞬间液相扩散连接[J]. 焊接学报, 2016, 37(3): 106-110.
shu
REN Haishui, XIONG Huaping, CHEN Bo, PANG Shujie, YE Lei. Transient liquid phase diffusion bonding of Ti3Al/TiAl joint using a Ti-Zr-Cu-Ni-Fe interlayer[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(3): 106-110.
Citation: REN Haishui, XIONG Huaping, CHEN Bo, PANG Shujie, YE Lei. Transient liquid phase diffusion bonding of Ti3Al/TiAl joint using a Ti-Zr-Cu-Ni-Fe interlayer[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(3): 106-110.
shu

以Ti-Zr-Cu-Ni-Fe合金为中间层的Ti3Al/TiAl瞬间液相扩散连接

  • 1.

    北京航空材料研究院焊接与塑性成形研究所, 北京 100095;北京航空航天大学材料科学与工程学院, 北京 100191

  • 2.

    北京航空材料研究院焊接与塑性成形研究所, 北京 100095

  • 3.

    北京航空航天大学材料科学与工程学院, 北京 100191

Transient liquid phase diffusion bonding of Ti3Al/TiAl joint using a Ti-Zr-Cu-Ni-Fe interlayer

  • 1.

    Welding and Plastic Forming Division, Beijing Institute of Aeronautical Materials, Beijing 100095, China;Department of Material Science and Engineering, Beihang University, Beijing 100191, China

  • 2.

    Welding and Plastic Forming Division, Beijing Institute of Aeronautical Materials, Beijing 100095, China

  • 3.

    Department of Material Science and Engineering, Beihang University, Beijing 100191, China

摘要

    摘要
  • 摘要: 采用瞬间液相扩散焊方法,以自主设计的Ti-Zr-Cu-Ni-Fe系新型合金作为中间层,实现了Ti3Al基合金与TiAl异种材料之间的连接.利用扫描电镜、电子探针以及X射线衍射分析等方法对接头界面微观组织和物相进行了分析.结果表明,Ti3Al/TiAl接头主要由富Ti相、Ti2Al反应层、α2-Ti3Al相以及溶入了Al元素的残余中间层组成;随着焊接温度的升高,中间层与母材的溶解与扩散变得更加强烈,使得Ti2Al反应层厚度增加,残余中间层的数量减少.抗剪测试结果显示,焊接接温度在880~1010℃范围内时,提高焊接温度有利于接头强度的提高;接头在室温下的最大抗剪强度达到502 MPa,在500℃下为196 MPa.
    Abstract: Transient liquid phase diffusion bonding of Ti3Al-based alloy to TiAl intermetallic was conducted and a newly designed Ti-Zr-Cu-Ni-Fe alloy was used as interlayer. The joint microstructure was examined using a scanning electron microscope (SEM) equipped with an electron probe micro-analyzer (EPMA), the phase constitution was identified using an X-ray diffraction (XRD) spectrometer detected on the fractured surface. The results show that the Ti3Al/TiAl joint mainly consists of Ti-rich phase, Ti2Al layer, α2-Ti3Al phase and residual Al dissolved interlayer alloy dissolved with Al. The dissolution and inter-diffusion between base metal and interlayer become stronger with the increase of the bonding temperature. And meantime the Ti2Al is thickened and the amount of residual interlayer at the central part of the joint is decreased. The shear test results indicate that in the range of 880~1010℃ the increase of bonding temperature is beneficial to the joint strength. The maximum shear strength of Ti3Al/TiAl joint reached 502 MPa at room temperature and the shear strength was maintained at 196 MPa in 500℃.
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    • 参考文献(16)
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  • 收稿日期:  2015-11-28

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