Abstract This work examines a functionally graded material, fabricated using additive manufacturing, that grades from Ti-6Al-4V to 304L stainless steel (SS304L) through an intermediate introduction of V. V was incorporated to preclude the formation of Fe-Ti phases in the direct joining of stainless steels and Ti-alloys. The addition of V resulted in cracking at the transition from 25 vol% SS304L/75 vol% V to 50 vol% SS304L/50 vol% V, thus the build was halted prior to the transition to 100 vol% SS304L. Through experimental investigations and thermodynamic calculations, this crack was found to be due to the formation of brittle σ-FeV.

中文翻译：

---

具有中间 V 形截面的 Ti-6Al-4V 至 304L 不锈钢的功能梯度材料的表征

摘要 这项工作研究了一种使用增材制造制造的功能梯度材料，该材料通过中间引入 V 来分级从 Ti-6Al-4V 到 304L 不锈钢 (SS304L)。V 被加入以防止 Fe-Ti 相在不锈钢和钛合金的直接连接。添加 V 导致在从 25 vol% SS304L/75 vol% V 过渡到 50 vol% SS304L/50 vol% V 时开裂，因此在过渡到 100 vol% SS304L 之前停止构建。通过实验研究和热力学计算，发现该裂纹是由于脆性 σ-FeV 的形成造成的。