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《材料导报》期刊社  2018, Vol. 32 Issue (4): 611-615    https://doi.org/10.11896/j.issn.1005-023X.2018.04.021
  材料研究 |
中锰Q&P钢残余奥氏体的稳定性及其TRIP效应
李辉1, 2, 陈家泳3, 段晓鸽4, 江海涛4
1 烟台南山学院工学院,烟台 265700;
2 山东南山铝业股份有限公司国家铝合金压力加工工程技术研究中心,烟台 265713;
3 比亚迪汽车工业有限公司,深圳 518118;
4 北京科技大学工程技术研究院,北京 100083
Stability and TRIP Effect of Retained Austenite of Medium Manganese Q&P Steel
LI Hui1, 2, CHEN Jiayong3, DUAN Xiaoge4, JIANG Haitao4
1 College of Engineering, Yantai Nanshan University, Yantai 265700;
2 National Engineering Research Center for Plastic Working of Aluminum Alloys, Shandong Nanshan Aluminum Co. Ltd., Yantai 265713;
3 BYD Auto Industry Company Limited, Shenzhen 518118;
4 Engineering Research Institute,University of Science and Technology Beijing, Beijing 100083
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摘要 通过单向拉伸及平面应变实验研究了Mn含量为7%的中锰淬火-配分(Q&P)钢残余奥氏体的机械稳定性,利用X射线衍射仪(XRD)测定试验钢残余奥氏体的含量,通过观察试验钢的拉伸曲线及扫描电镜(SEM)、透射电镜(TEM)照片,分析变形前后的微观组织,研究中锰Q&P钢的变形机制。结果表明:应力状态对残余奥氏体稳定性有较大的影响,平面应变更有利于相变诱导塑性(TRIP)效应的发挥;中锰Q&P钢的拉伸变形特征是由超细晶硬化机制和TRIP效应相互作用产生的,通过微观组织观察发现中锰Q&P钢的塑性变形主要是残余奥氏体的TRIP效应,其中薄膜状的残余奥氏体的稳定性最高。
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李辉
陈家泳
段晓鸽
江海涛
关键词:  中锰淬火-配分钢  残余奥氏体  稳定性  相变诱导塑性效应    
Abstract: The influence of the macro stress state on retained austenite stability of a quenched and partitioned (Q&P) steel with Mn content of 7% was investigated by uniaxial tension and plane strain experiments. To evaluate the volume fraction of retained austenite under variable plastic strain, X-ray diffraction method was adopted. The deformation mechanism of the medium manganese Q&P steel was studied by observing the tensile curve, analyzing the change in microstructure of Q&P steel in deformation process by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results showed that the stress state had a great effect on the stability of retained austenite, and the plane strain was more conducive to the performance of the transformation induced plasticity (TRIP) effect. The tensile deformation characteristics of the 7Mn Q&P steel can be attributed to the interaction of ultrafine grain hardening mechanism and TRIP effect. The plastic deformation mechanism of the medium Q&P steel was mainly TRIP effect, the thin film and fine globular particles were more stable.
Key words:  medium manganese Q&P steel;    retained austenite    stability    transformation induced plasticity effect
               出版日期:  2018-02-25      发布日期:  2018-02-25
ZTFLH:  TG151  
作者简介:  李辉:男,1983年生,博士,副教授,主要从事汽车用金属材料的组织性能研究 E-mail:lhlwj8888@163.com
引用本文:    
李辉, 陈家泳, 段晓鸽, 江海涛. 中锰Q&P钢残余奥氏体的稳定性及其TRIP效应[J]. 《材料导报》期刊社, 2018, 32(4): 611-615.
LI Hui, CHEN Jiayong, DUAN Xiaoge, JIANG Haitao. Stability and TRIP Effect of Retained Austenite of Medium Manganese Q&P Steel. Materials Reports, 2018, 32(4): 611-615.
链接本文:  
http://www.mater-rep.com/CN/10.11896/j.issn.1005-023X.2018.04.021  或          http://www.mater-rep.com/CN/Y2018/V32/I4/611
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