通过金相观察,扫描电镜和X射线结构分析等方法研究Cr18Ni8不锈钢于阴极充氢后的马氏体相变和开裂现象。指出氢促进马氏体相变,α′相在ε相之后出现,随着α′相的形成出现表面显微裂纹。讨论了氢的作用,认为氢的作用在于对晶体缺陷的影响。
Martensitic transformation of a 18-8 austenitic stainless steel cathodically charg-ed of hydrogen has been investigated by means of optical microscopy, scanningelectron microscopy and X-ray analysis. It is shown that hydrogen promotes thetransformation of martensite and the α′-martensite is formed next to the ε-marten-site, accompanied by the formation of surface microcracks. The effect of hydrogenon crystal defects has been regarded to be responsible for the aforementionedphenomena in such steel.
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