|
|
Metadynamic recrystallization and microstructure evolution of a continuously cast Ti-microalloyed steel slab with heavy reduction |
Zi-jian Wei1,2, Cheng Ji1,2, Tian-ci Chen1,2, Miao-yong Zhu1,2, Chen-hui Wu2,3 |
1 Key Laboratory for Ecological Metallurgy of Multimetallic Ores (Ministry of Education), Shenyang 110819, Liaoning, China; 2 School of Metallurgy, Northeastern University, Shenyang 110819, Liaoning, China; 3 Pangang Group Research Institute Co., Ltd., Panzhihua 617000, Sichuan, China |
|
|
Abstract The effects of the deformation parameters in the heavy reduction (HR) process on recrystallization kinetics and microstructure evolution were analyzed. Based on the experimental results, metadynamic recrystallization (MDRX) kinetic and austenite grain size models were established for a continuously cast slab during HR. Moreover, the evolution of the quenched microstructure after MDRX was observed using electron backscatter diffraction. The relative frequency of very low-angle grain boundaries decreased from 58.8% to 52.1%, and the relative frequency of high-angle grain boundaries increased from 28.5% to 38.9%. Analyses revealed that the recovery was the main softening mechanism. The decrease in the total grain boundary length indicated that subgrain growth occurred with increasing inter-pass time. The main texture evolved from a {001}\110[ texture to a {112}\111[ texture, and the texture strength remained unchanged.
|
|
|
|
|
Cite this article: |
Zi-jian Wei,Cheng Ji,Tian-ci Chen, et al. Metadynamic recrystallization and microstructure evolution of a continuously cast Ti-microalloyed steel slab with heavy reduction[J]. Journal of Iron and Steel Research International, 2022, 29(01): 103-114.
|
|
|
|
[1] |
Fan Zhao, Guo-ning He, Ya-zheng Liu, Zhi-hao Zhang, Jian-xin Xie. Effect of titanium microalloying on microstructure and mechanical properties of vanadium microalloyed steels for hot forging[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2022, 29(2): 295-306. |
[2] |
Zhong-yi Chen, Zheng-zong Chen, Dong-xu Kou, Yong-qing Li, Yong-lin Ma, Yi-ming Li. Evolution of microstructure in reheated coarse-grained zone of G115 novel martensitic heat-resistant steel[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2022, 29(2): 327-338. |
[3] |
Shuai Xu, Shao-hua Li, Shui-ze Wang, Jun-heng Gao, Rui Cao, Qing-xiao Feng, Hua-long Li, Xin-ping Mao. Research status and prospect of direct strip casting manufactured lowcarbon microalloyed steel[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2022, 29(01): 17-33. |
[4] |
Xiao-lin Li, Chi Jin, Hao-zhe Li, Xiao-xiao Hao, Yi He, Xiang-tao Deng, Zhao-dong Wang. Influence of cooling rate on phase transformation and precipitation behavior of Ti-bearing steel in continuous cooling process[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2022, 29(01): 165-174. |
[5] |
Da-chao Fu, Guang-hua Wen, Xue-qin Zhu, Jun-li Guo, Ping Tang. Modification for prediction model of austenite grain size at surface of microalloyed steel slabs based on in situ observation[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2021, 28(9): 1133-1140. |
[6] |
Peng Han, Wen-long Zhan, Hao-bin Zhu, Lei Gao, Ying-chang Yu, Zhi-jun He, Jun-hong Zhang, Qing-hai Pang. Thermal analysis and kinetic modeling of pulverized coal combustion accompanied with coke breeze[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2021, 28(7): 809-817. |
|
|
|
|