杨璐,张韵,沈晓辉,刘伟明,魏海莲,潘红波

• 1:安徽工业大学安徽省低碳冶金与固废资源化利用重点实验室
• 2:安徽工业大学冶金工程学院
• 3:安徽工业大学材料科学与工程学院

摘要(Abstract)：

针对高锰钢高加工硬化特性导致工业大压下率冷轧难以进行的现状，基于工业可行冷轧压下率(30%)对高锰TWIP钢进行冷轧，随后对其进行750和900℃退火保温不同时间的处理，获得不同比例(0%～100%)细晶镶嵌于粗晶基体中的单相奥氏体异质结构，分析了不同退火工艺下试验钢的再结晶形核机制。结果表明：在750℃退火保温300 s后，试验钢的组织主要由变形奥氏体和粗晶奥氏体构成，随着保温时间延长到1800 s,变形奥氏体逐渐通过亚晶合并形核的方式发生再结晶；在900℃退火保温300 s时，晶界形核占据主导地位，而保温时间延长到1800 s后，组织逐渐转变为等轴晶粒；其中，在900℃退火保温300 s后，试验钢得到了再结晶体积分数为30%的异质结构组织，在形变过程中通过位错塞积与孪晶诱导塑性(TWIP)效应协同作用，实现高强度与高塑性的优异匹配，其屈服强度与抗拉强度分别为611.1和915.6 MPa,同时保持52.5%的伸长率，强塑积达到48 GPa·%。

关键词(KeyWords)： TWIP钢;异质结构;静态再结晶;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(U1860105,52404334);; 安徽省高校自科重大项目(2024AH040025);; 安徽省重点研发计划项目(202304a05020026)

作者(Author): 杨璐,张韵,沈晓辉,刘伟明,魏海莲,潘红波

DOI: 10.13289/j.issn.1009-6264.2025-0105

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