Please wait a minute...
Acta Metall Sin  2010, Vol. 46 Issue (7): 838-843    DOI: 10.3724/SP.J.1037.2009.00858
论文 Current Issue | Archive | Adv Search |
EFFECT OF Nb, Ti AND V ON THE HOT DEFORMATION BEHAVIOR OF LOW CARBON Nb MICROALLOYED STEELS
WU Jinbin1), LIU Guoquan1, 2),  WANG Hao1)
1) School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083
2) State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083
Cite this article: 

WU Jinbin LIU Guoquan WANG Hao. EFFECT OF Nb, Ti AND V ON THE HOT DEFORMATION BEHAVIOR OF LOW CARBON Nb MICROALLOYED STEELS. Acta Metall Sin, 2010, 46(7): 838-843.

Download:  PDF(910KB) 
Export:  BibTeX | EndNote (RIS)      
Abstract  

The characteristic values such as critical strain εc, peak strain εp, critical stress σc, peak stress σp and steady-state stress σss were obtained from work-hardening rate-flow stress (θ-σ) curves based on the thermal/mechanical simulation data of 6 microalloyed steels with different contents of Nb, Ti and V. The results show that the peak stress σp was raised with the increasing contents of Nb, Ti and V, while the εc/εp value for all the experimental steels are in the range of 0.50-0.65. Then the Avrami kinetic curves of dynamic recrystallization were calculated from σ-ε curves for the 6 steels, which are very similar to those curves obtained by metallographic methods. With the increase of content of Nb and Ti, the corresponding Avrami curve shifted to the right and the dynamic recrystallization kinetics were hindered; while simultaneously adding Ti and V into Nb microalloyed steel would lead to the dynamic recrystallization to be initiated at much lower strain rate.

Key words:  Nb, Ti, V, low carbon Nb microalloyed steel      dynamic recrystallization kinetics      Avrami kinetics curve     
Received:  23 December 2009     
Fund: 

Supported by National Science Infrastructure Platform Construction Project of China and Vanadium International Technical Commitee

URL: 

https://www.ams.org.cn/EN/10.3724/SP.J.1037.2009.00858     OR     https://www.ams.org.cn/EN/Y2010/V46/I7/838

[1] G´omez M, Medina S F, Quispe A, Valles P. ISIJ Int, 2002; 42: 423
[2] Laasraoui A, Jonas J J. Metall Mater Trans, 1991; 122A: 1545
[3] Pussegoda L N, Jonas J J. ISIJ Int, 1991; 31: 278
[4] Medina S F, Mancilia J E. ISIJ Int, 1993; 33: 1257
[5] Zhou X G, Liu Z Y, Wu D, Wang G D, Liu X H. Acta Metall Sin, 2008; 44: 1188
(周晓光, 刘振宇, 吴迪, 王国栋, 刘相华. 金属学报, 2008; 44: 1188)
[6] Jonas J J, Quelennec X, Jiang L, E’tienne M. Acta Mater, 2009; 57: 2748
[7] Poliak E I, Jonas J J. Acta Mater, 1996; 44: 127
[8] Mcqueen H J, Ryan N D. Mater Sci Eng, 2002; A322: 43
[9] Liu L B. Master Thesis, University of Science and Technology Beijing, 2006
(刘李斌. 北京科技大学硕士学位论文, 2006)
[10] Shi B H. Master Thesis, University of Science and Technology Beijing, 2004
(史秉华. 北京科技大学硕士学位论文, 2004)
[11] Yi H L, Du L X, Wang G D, Liu X H. J Northeastern University, 2007; 28: 1369
(衣海龙, 杜林秀, 王国栋, 刘相华. 东北大学学报, 2007; 28: 1369)
[12] Yong Q L. The Second Phase in Steel. Beijing: Metallurgical Industry Press, 2006: 146
(雍岐龙. 钢铁材料中的第二相. 北京:  冶金工业出版社, 2006: 146)
[13] Wu J B, Liu G Q, Wang C Y, Xu Lei, Wang H. Mater Sci Technol, to be published
[14] Estrin Y, Mecking H. Acta Metall, 1984; 32: 57
[15] Zrn´?k J, Kvackaj T, Pongpaybul A, Sricharoenchai P, Vilk J, Vrchovinsky V. Mater Sci Eng, 2001; A319–321: 321
[16] Gao W L, Bai G R, Zhou Z M. Acta Metall Sin, 1992; 28A: 351
(高维林, 白光润, 周志敏. 金属学报, 1992; 28A: 351)
[17] Akben M G, Bacroix B, Jonas J J. Acta Metall, 1983; 31: 161
[18] Medina S F, Mancilla J E. ISIJ Int, 1996; 36: 1063
[19] Qi J J, Huang Y H, Zhang Y. Microalloyed Steel. Beijing: Metallurgical Industry Press, 2006: 24
(齐俊杰, 黄运华, 张跃. 微合金化钢. 北京: 冶金工业出版社, 2006: 24)
[20] Zhang L W, Lu Y, Deng X H, Pei J B, Zhang G L. J Dalian Univ Technol, 2008; 48: 351
(张立文, 卢瑜, 邓小虎, 裴继斌, 张国梁. 大连理工大学学报, 2008; 48: 351)
[21] Xu W C, Ma X, Sun F Y, Zong G S. Acta Metall Sin, 1988; 24: 392
(徐温崇, 马翔, 孙福玉, 宗贵升. 金属学报, 1988; 24: 392)
[22] Mekkawy F, Fawakhry K A, Mishreky M L. Scand J Metall, 1990; 19: 236

No related articles found!
No Suggested Reading articles found!