丰涵,宋志刚,何建国,李树健

• 1:钢铁研究总院特殊钢研究所

摘要(Abstract)：

通过热拉伸、热压缩试验研究了不同氮含量的022Cr25Ni7Mo3N双相不锈钢的热加工行为和软化机制。结果表明,试验钢高温抗拉强度随N含量增加而提高,该影响关系在较低变形温度区间尤为明显;在1100℃平面压缩达到稳态流变之后,试验钢的流变应力很快再次上升,出现二次硬化现象,N含量提高致使试验钢在更低的应变条件下更快地进入二次硬化阶段;试验钢高温变形过程中的应变主要传导到高温更软的铁素体相中,该相积蓄的较大应变能促进了铁素体的动态再结晶启动;022Cr25Ni7Mo3N双相不锈钢的软化机制主要是铁素体的动态回复和动态连续再结晶。

关键词(KeyWords)： 热加工;双相不锈钢;动态再结晶;氮含量

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划(2016YFB0300201)

作者(Author): 丰涵,宋志刚,何建国,李树健

DOI: 10.13289/j.issn.1009-6264.2019-0500

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