张宇鹏,李大赵,闫志杰,王睿,杨晓敏,康燕,牛伟强

• 1:中北大学材料科学与工程学院
• 2:太原理工大学材料科学与工程学院

摘要(Abstract)：

采用扫描电镜、透射电镜和拉伸试验等研究了临界退火工艺对Fe-10.2Mn-0.48C-2.2Al-0.7Si-0.75V的冷轧中锰钢微观组织和力学性能的影响。通过热力学计算确定最佳的退火温度,以便获得最佳的力学性能。结果表明:临界退火后实验钢获得了板条状和等轴状奥氏体晶粒,同时铁素体中存在高密度位错。奥氏体的体积分数受退火温度的影响较大。实验钢的力学性能是由TRIP效应、TWIP效应和位错强化共同决定的。实验钢抗拉强度和伸长率随退火温度升高呈现出先增加后降低的趋势,在650℃退火后,实验钢的抗拉强度为1409 MPa,伸长率为16.4%,强塑积为23.1 GPa·%。

关键词(KeyWords)： 冷轧;锰钢;退火;微观组织;TRIP效应

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52071300);; 山西省自然科学基金(201801D121105);; 山西省科技重大专项(20181101014)

作者(Author): 张宇鹏,李大赵,闫志杰,王睿,杨晓敏,康燕,牛伟强

DOI: 10.13289/j.issn.1009-6264.2020-0388

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