史志刚,马红,崔雄华,何晓东,王弘喆

• 1:西安热工研究院有限公司

摘要(Abstract)：

采用XRD、SEM、TEM、EBSD和VSM等多种方法,分析了S30432奥氏体不锈钢新样品、高温应力时效样品(650℃/51 MPa/1.9×104h)的显微组织(尤其是高温应力时效后马氏体组织),探讨了高温应力时效前后的磁性变化。结果表明:S30432高温应力时效组织中存在α'-马氏体,位于贫铬区内的紧邻晶界区,亚结构为高密度位错;紧邻晶界区中铬贫化诱发了马氏体转变;碳化物具有磁性,为0.234 emu/g(外加磁场强度1000 Oe时);马氏体和碳化物共同引起了高温时效S30432出现磁性,其中前者占主要部分。

关键词(KeyWords)： S30432钢;高温诱发马氏体转变;α'-马氏体;紧邻晶界区

Abstract:

Keywords:

基金项目(Foundation): 西安热工研究院有限公司科技项目(TN-15-TYK01)

作者(Author): 史志刚,马红,崔雄华,何晓东,王弘喆

DOI: 10.13289/j.issn.1009-6264.2016.06.020

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