Non-cube-on-cube orientation relationship between M23C6 and austenite in an austenitic stainless steel
Non-cube-on-cube orientation relationship between M23C6 and austenite in an austenitic stainless steel
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DOI：
10.1016/j.scriptamat.2022.114597
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发表时间：
2022-02-20
影响因子：
6
通讯作者：
Mola, Javad
中科院分区：
文献类型：
--
作者：
Chen, Guanghui;Rahimi, Reza;Mola, Javad
通过扫描和透射电子显微镜的衍射分析，研究了轻质高碳不锈钢Fe-17Cr-9Ni-6Mn-4Al-0.42C(wt.%)中M23C6碳化物与奥氏体间的晶体取向关系。扫描电子显微镜的电子背散射衍射分析表明，时效诱导的M23C6碳化物与奥氏体相之间存在一种近似于Kurdjuov-Sachs(K-S)取向关系的取向关系。观察到的取向关系与通常报道的立方体对立方体取向关系不同，这是由于作为中间相的M7C3碳化物形成了M23C6碳化物。
Crystallographic orientation relationship between M23C6 carbides and austenite in the lightweight high carbon stainless steel Fe- 17Cr- 9Ni- 6Mn-4Al- 0.42C (wt.%) was investigated by diffraction analysis in scanning and transmission electron microscopes. Electron backscatter diffraction analysis in SEM indicated the existence of an orientation relationship approximated by the Kurdjumov-Sachs (K-S) orientation relationship between the M23C6 carbides induced by aging and the austenitic matrix. The observation of an orientation relationship deviating from the commonly reported cube-on-cube orientation relationship was explained by the formation of M23C6 carbides via M7C3 carbides as an intermediate phase.