In current work, we have used fiber laser welding (FLW) technology to manufacturing the Ti–6Al–4V (TC4) and Inconel 718 (IN718) bimetallic structure and to prevent the formation of brittle phases via Cu/Ta multi-interlayer. The results of this study showed that Cu/Ta multi-interlayer was very effective in preventing the formation of continuous brittle intermetallic layers of Ti–Ni and Ti–Cu. The good metallurgical bonds were presented at these interfaces between TC4 and IN718. As a result, the joints with gradational structure, i.e. TC4| (α+β Ti, Ta)_ss| (β Ti, Ta)_ss| Ta(s, s)+ (Cu(s, s)+ Ta(s, s)+ Ti₃Ni₄)| Cu(s, s)+ (Cu(s, s)+ Ta(s, s))| Ni(Ta, Fe, Cr)_ss| IN718 can be formed, which can contribute high tensile strength of joints with the value of 396 MPa.

在目前的工作中，我们使用光纤激光焊接 (FLW) 技术制造 Ti-6Al-4V (TC4) 和 Inconel 718 (IN718) 双金属结构，并通过 Cu/Ta 多层夹层防止脆性相的形成。这项研究的结果表明，Cu/Ta 多层夹层对于防止 Ti-Ni 和 Ti-Cu 连续脆性金属间化合物层的形成非常有效。在 TC4 和 IN718 之间的这些界面处呈现出良好的冶金结合。结果，具有渐变结构的接头，即TC4| (α+β Ti, Ta) _ss | (β Ti, Ta) _ss | Ta(s, s)+ (Cu(s, s)+ Ta(s, s)+ Ti ₃ Ni ₄ )| Cu(s, s)+ (Cu(s, s)+ Ta(s, s))| Ni(Ta, Fe, Cr) _ss| 可以形成IN718，它可以为接头提供396 MPa的高抗拉强度。