Study on Recrystallization and Precipitation Behavior of Cold-Rolled Low-Alloy High Strength Steel

被引：0
作者：
Li Z.-H. [1 ]
Ren J.-K. [1 ]
Huo J.-S. [2 ]
Li J.-P. [1 ]
机构：
[1] School of Material Science & Engineering, Northeastern University, Shenyang
[2] Tangshan Steel Plate Co., Ltd., Tangshan
来源：
Dongbei Daxue Xuebao/Journal of Northeastern University | 2019年 / 40卷 / 03期
关键词：
Annealing; Cold-rolled; Low-alloy steel; Precipitation; Recrystallization;
D O I：
10.12068/j.issn.1005-3026.2019.03.007
中图分类号：
学科分类号：
摘要：
The kinetics of recrystallization in cold-rolled low-alloy high strength steel was studied by thermal simulation test. A kinetic model of recrystallization was built based on JMAK equation, which provided a theoretical basis to control ferrite recrystallization and precipitation behavior. The results show that the recrystallization completion time is greatly decreased with increasing annealing temperature. For the same reduction of cold rolling, the initial bainite structure contains a higher dislocation density and storage energy during annealing. The recovery and recrystallization process are synchronously advanced at the heating rate of 80℃/s, and the residual deformation storage energy increases before recrystallization so that the ferrite recrystallization can be quickly completed. Moreover, after the new process, the precipitation size in the experimental steel is more uniform and the volume fraction is higher, which lead to a better performance of precipitation strengthening. © 2019, Editorial Department of Journal of Northeastern University. All right reserved.
引用
收藏
页码：339 / 344
页数：5
相关论文
共 14 条
[11]  
Vandermeer R.A., Rath B.B., Interface migration during recrystallization: the role of recovery and stored energy gradients, Metallurgical Transactions A, 21, 5, pp. 1143-1149, (1990)
[12]  
Martlnez-De-Guerenu A., Arizti F., Dlaz-Fuentes M., Recovery during annealing in a cold rolled low carbon steel. Part I: Kinetics and Microstructural characterization, Acta Materialia, 52, 12, pp. 3657-3664, (2004)
[13]  
Yong Q.-L., Sun X.-J., Zheng L., Et al., The role of the second phase in steel materials, Science & Technology Consulting Herald, 6, 8, pp. 2-3, (2009)
[14]  
Charleux M., Poole W.J., Militzer M., Precipitation behavior and its effect on strengthening of an HSLA-Nb/Ti steel, Metallurgical and Materials Transactions A, 32, 7, pp. 1635-1647, (2001)
12