In-situ Observation of martensite transformation and retained austenite in supermartensitic stainless steel
In-situ Observation of martensite transformation and retained austenite in supermartensitic stainless steel
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超级马氏体不锈钢中马氏体转变和残余奥氏体的原位观察
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
Y. Komizo
中科院分区：
文献类型：
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作者：
Shuoyuan Zhang;H. Terasaki;Y. Komizo
利用高温激光扫描共聚焦显微镜和同步辐射X射线衍射技术对超级马氏体不锈钢冷却过程中的马氏体相变进行了原位观察。利用X射线衍射斑点和电子背散射衍射图（EBSD）对马氏体和奥氏体组织进行了晶体学分析。从试验结果可以得出结论，当马氏体转变发生时，奥氏体相通过小于3度的晶粒旋转来容纳。马氏体相变后即刻的相变应力影响奥氏体的X射线衍射积分强度。认为马氏体相变过程中，奥氏体母相的衍射能力增强，是由于压缩应力的调节，引入了缺陷，从而形成了镶嵌结构。
Martensite transformation of supermartensitic stainless steel during cooling was in-situ observed by using high temperature laser scanning confocal microscopy and X-ray diffraction by Synchrotron radiation. The crystallography of martensite and austenite structure were analyzed which X-ray diffraction spots and electron back scattered diffraction patterns (EBSD). From the test results it could be concluded that the austenite phase is accommodated by rotation less that 3 degree of the crystallite when the martensite transformation is occurred. X-Ray diffraction integration strength of austenite was influenced by the transformation stress immediately after the martensite transformation. We consider that the diffracting power of parent phase of austenite increase during martensitie transformation, because the compression stress is accommodated, and the defect is introduced, resulting in the mosaic structure.