Abstract In this work, the effect of plastic deformation-induced martensite on the CE behavior of 304 SS was investigated by micro-area XRD, nano indentation and EBSD. Results indicated that the martensitic content initially displayed an increased trend and then decreased in the later stage. The formation of martensite was beneficial to the CE resistance of 304 SS in incubation and rising periods since the impact energy dissipation through martensitic transformation and the strengthening effect of martensite were dominant. However, it was no longer conductive to the CE resistance in stable period in virtue of the severely damaged surface and the markedly reduced plastic deformation ability. In addition, obvious grain refinement was observed in the CE surface layer, which should be correlated with the deformation twins cutting the original grains.

中文翻译：

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了解 304 不锈钢变形诱发马氏体在不同空蚀阶段的作用

摘要 在这项工作中，通过微区XRD、纳米压痕和EBSD 研究了塑性变形诱发马氏体对304 SS CE 行为的影响。结果表明，马氏体含量开始呈上升趋势，后期呈下降趋势。马氏体的形成有利于304 SS在孕育期和上升期的抗CE性，因为马氏体转变的冲击能量耗散和马氏体的强化作用占主导地位。然而，由于表面严重损坏和塑性变形能力显着降低，它在稳定期不再对CE电阻有传导作用。此外，在 CE 表面层观察到明显的晶粒细化，这应该与切割原始晶粒的变形孪晶有关。