李帅帅,王昕,贾建文,杜华云,卫英慧,侯利锋

• 1:太原理工大学材料科学与工程学院
• 2:山西省金属材料腐蚀与防护工程技术研究中心

摘要(Abstract)：

中锰钢通过微观组织调控，可实现优异的强度-塑韧性协同增长，是第三代先进高强钢的潜力材料。采用不同淬火工艺来调控Fe-10Mn-0.44C-1.87Al-0.67V中锰钢的微观组织，并结合VC的析出来优化其性能。结果表明：经1020℃淬火+300℃回火后，中锰钢的组织为板条状马氏体+残留奥氏体，形变时残留奥氏体发生相变诱导塑性效应，使其具有优异的塑性。经800℃淬火+250℃回火后，组织为细小的马氏体、细小弥散分布的VC和少量残留奥氏体，通过位错强化、细晶强化和析出强化作用使中锰钢具有最佳的力学性能，屈服强度为1190 MPa,抗拉强度为1473 MPa,伸长率为22%,强塑积为32.4 GPa%。

关键词(KeyWords)： 中锰钢;淬火处理;残留奥氏体;马氏体

Abstract:

Keywords:

基金项目(Foundation): 山西省重点研发计划(202102050201007,2022ZDYF040);; 山西省科技创新人才团队专项计划(202204051001004);; 山西浙大新材料与化工研究院项目(2022SZ-TD007);; 中央引导地方科技发展资金项目(YDZJSX2021B004);; 吕梁市引进高层次科技人才重点研发项目(Rc2020-109)

作者(Author): 李帅帅,王昕,贾建文,杜华云,卫英慧,侯利锋

DOI: 10.13289/j.issn.1009-6264.2023-0230

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