Two low-transformation-temperature weld metals, 12Cr6Ni and 8Cr10Ni weld metals, were devised and their martensite start temperatures were 245°C and 225°C, respectively. Despite a small difference of 20°C in martensite start temperature, the martensite finish temperature of the former was 100°C, while the one of the latter was below room temperature. The difference in martensite finish temperature was due to the stacking fault energy. Lower stacking fault energy accelerated martensitic transformation, thus elevating martensite finish temperature. Owing to difference in martensite finish temperature, the microstructures, mechanical properties and residual stress of low-transformation-temperature weld metals varied correspondingly. Furthermore, experimental and finite-element study indicated that volume expansion strain and martensitic transformation temperature range strongly affected residual stress.

中文翻译：

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两种低相变温度焊缝金属的相变温度、力学性能和残余应力

设计了两种低相变温度焊缝金属 12Cr6Ni 和 8Cr10Ni 焊缝金属，其马氏体起始温度分别为 245°C 和 225°C。尽管马氏体起始温度相差 20°C，但前者的马氏体结束温度为 100°C，而后者的马氏体结束温度低于室温。马氏体结束温度的差异是由于堆垛层错能。较低的堆垛层错能加速了马氏体转变，从而提高了马氏体最终温度。由于马氏体结束温度的不同，低相变温度焊缝金属的组织、力学性能和残余应力也相应变化。此外，