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采用Cu46Zr46Al8非晶薄片作中间层材料研究了不同温度与时间下TiAl合金的瞬时液相扩散连接(TLP),利用扫描电镜(SEM)、能谱仪(EDS)和X射线衍射仪(XRD)对连接层组织与成分分布进行了分析,并用电子万能试验机对连接试样的力学性能进行测试。结果表明,以Cu46Zr46Al8非晶薄片作中间层,能得到连接紧密、无气孔缺陷裂痕等的良好接头。在连接过程中,中间层与基体发生剧烈的扩散反应,在连接层中形成3层组织,生成复杂的反应产物。在900℃×30 min下得到的焊接件,其剪切强度可达80.4 MPa。
The transient liquid phase diffusion bonding (TLP) of TiAl alloy under different temperature and time was studied by using Cu46Zr46Al8 amorphous thin film as interlayer material. The scanning electron microscopy (SEM), energy dispersive spectrometer (EDS) and X-ray diffraction The microstructure and composition distribution of the tie layer were analyzed. The mechanical properties of the connected samples were tested by electronic universal testing machine. The results show that, with Cu46Zr46Al8 amorphous sheet as an intermediate layer, can be connected with a good, no defects such as porosity defects joints. In the connection process, the intermediate layer and the matrix occurred violent diffusion reaction in the connecting layer to form three layers of tissue to produce complex reaction products. The welded parts obtained at 900 ℃ × 30 min, the shear strength of up to 80.4 MPa.