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通过对钎料综合性能的对比,研究了混合稀土的添加对Ti-Zr-Cu-Ni系合金钎料性能,以及对真空钎焊TC4母材的钎缝的组织特征和机械性能的影响。研究结果表明:添加适当含量的混合稀土的钎料熔点降低,润湿性好,钎焊TC4的力学性能好,混合稀土的含量不应超过5%。
The effect of mixed rare earth addition on the properties of Ti-Zr-Cu-Ni alloy brazing filler metal and the microstructure and mechanical properties of brazed joints of vacuum brazed TC4 base metal were studied. The results show that the melting point of brazing alloy with proper content of mixed rare earth decreases and the wettability is good. The mechanical properties of brazed TC4 are good, and the content of mixed rare earth should not exceed 5%.