ABSTRACT This study discusses the effect of Ni content of low-transformation-temperature (LTT) fillers on welding residual stresses of AISI 410 plates. The plates were joined by LTT fillers with 11 wt-% Cr and varying Ni from 3 to 11 wt-%. Evaluation of varying Ni content on the martensitic transformation temperature (Ms) by dilatometric tests indicates that the Ms of LTT fillers decreases from 335°C to 67°C by increasing Ni wt-%. Residual stress measurements show the highest compressive longitudinal stress (−310 MPa) in the weld bead deposited by the LTT filler contained 7 wt-% Ni and Ms = 202°C. This result is associated with the highest final expansion strain (0.37%) in this composition. Microstructural analyses show the presence of retained austenite by increasing the Ni more than 7 wt-%.

中文翻译：

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用于 AISI 410 马氏体不锈钢的低相变温度填料的基础合金开发

摘要 本研究讨论了低相变温度 (LTT) 填料的 Ni 含量对 AISI 410 板焊接残余应力的影响。这些板通过含有 11 wt-% Cr 和从 3 到 11 wt-% 变化的 Ni 的 LTT 填料连接。通过膨胀试验评估不同 Ni 含量对马氏体转变温度 (Ms) 的影响表明，随着 Ni wt-% 的增加，LTT 填料的 Ms 从 335°C 降低到 67°C。残余应力测量结果表明，LTT 填料沉积的焊缝中的纵向压缩应力最高 (-310 MPa)，其中含有 7 wt% 的 Ni 和 Ms = 202°C。该结果与该组合物中最高的最终膨胀应变 (0.37%) 相关。显微组织分析表明，通过将 Ni 增加超过 7 重量%，存在残余奥氏体。