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对铁合金TC4与不锈钢ICrl8Ni9Ti异种金属扩散焊接头的结合性能进行了试验研究，利用光学显微镜、扫描电镜、电子探针仪等对接头进行了微观分析．结果表明：TC4/1Cr19Ni9Ti直接扩散焊时，由于母村组元的相互扩散和迁移，在交界面附近形成了金属间化合物层，而导致接头脆断．采用钒十铜作中间过渡金属，则有效地防止了Ti与Fe、Cr、Ni的相互扩散和迁移，保证了钛合金TC4与不锈钢1Cr18Ni9Ti的良好连接．接头的强度与软质中间层铜的厚度有关，最高强度可接近母材不锈钢的下限．
The bonding properties of ferroalloy TC4 and stainless steel ICrl8Ni9Ti dissimilar metal diffusion bonding joint were studied. The microstructure of the joint was analyzed by optical microscope, scanning electron microscope and electron probe. The results show that the intermetallic compound layer formed near the interface due to the mutual diffusion and migration of the mother village during the TC4 / 1Cr19Ni9Ti direct diffusion welding, resulting in the brittle fracture of the joint. The use of vanadium-ten copper as the intermediate transition metal effectively prevents the mutual diffusion and migration of Ti, Fe, Cr and Ni, and ensures the good connection between the titanium alloy TC4 and the stainless steel 1Cr18Ni9Ti. The strength of the joint is related to the thickness of the soft middle layer of copper, the highest strength close to the lower limit of the base stainless steel.