热处理工艺对超级马氏体钢逆变奥氏体的影响

发布时间：2018-06-21 15:52

  本文选题：超级马氏体不锈钢 + 逆变奥氏体　； 参考：《钢铁》2015年02期

【摘要】：试验采用光学显微镜、X射线衍射仪(XRD)、透射电镜(TEM)及能谱分析(EDS)等手段,研究不同铬含量的超级马氏体不锈钢在相同热处理工艺下逆变奥氏体含量、组织形貌及生长规律的异同。结果表明,13Cr和15Cr两试验钢经淬火+回火后的显微组织为回火马氏体和逆变奥氏体,两试验钢中逆变奥氏体含量及尺寸均随着回火温度升高先增加再减小,且在650~700℃时达到最大。两试验钢内的逆变奥氏体在回溶过程中会对基体组织产生细化作用。通过对比发现,15Cr钢中的逆变奥氏体含量更多,尺寸更大,回溶时对基体的细化作用更明显。
[Abstract]:By means of optical microscope X ray diffractometer, transmission electron microscope (TEM) and energy dispersive analysis (EDS), the contents of austenite, microstructure and growth law of super martensite stainless steel with different chromium content under the same heat treatment process were studied. The results show that the microstructure of the two test steels after quenching and tempering is tempering martensite and inverting austenite. The content and size of inverting austenite in the two test steels increase first and then decrease with the increase of tempering temperature, and reach the maximum at 650 ~ 700 鈩，

本文编号：2049346