For the first time, additive manufacturing was used to obtain a strong joint (bonding strength >200 MPa) between stainless steel and Ti-6Al-4V using a V interlayer. The V interlayer applied via solid-state joining prevented the formation of brittle intermetallic phases more effectively than a V interlayer deposited by a liquid-state process. The microstructure and strength of the joint interface depended on the laser power and scan speed. The joint strength decreased with increasing annealing time, especially after 4 and 24 h, demonstrating the presence of the Fe-V-Cr σ-phase.

中文翻译：

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使用V夹层在Ti-6Al-4V上激光沉积增材制造17-4PH不锈钢

首次使用增材制造法使用V夹层在不锈钢和Ti-6Al-4V之间获得牢固的结合（结合强度> 200 MPa）。通过固态连接施加的V中间层比通过液相工艺沉积的V中间层更有效地防止了脆性金属间相的形成。关节界面的微观结构和强度取决于激光功率和扫描速度。接头强度随着退火时间的增加而降低，特别是在4和24 h之后，这表明存在Fe-V-Crσ相。