Behavior of Dynamic Recrystallization of Nb-V-Ti Microalloying 0.37C-1. 45Mn Non-Quenched and Tempered Steel

Special Steel ›› 2014, Vol. 35 ›› Issue (4): 66-68.

Behavior of Dynamic Recrystallization of Nb-V-Ti Microalloying 0.37C-1. 45Mn Non-Quenched and Tempered Steel

Man Tinghui^1,2, Gao Peng¹, Yang Hongxin³, Zhou Zhan⁴, Yong Qilong², Bao Yaozong²

1 Materials Science and Engineering School, Kunming University of Science and Technology, Kunming 650093 ；
2 Institute for Special Steel, Central Iron and Steel Research Institute, Beijing 100081 ；
3 Great Wall Motor Co Ltd, Baoding 071000；
4 Technology Center, Jiangsu Suzhou Iron and Steel Group, Suzhou 215151

Received:2014-03-31 Online:2014-08-01 Published:2022-09-03

Nb-V-Ti微合金化0.37C-1.45Mn非调质钢动态再结晶行为

满廷慧^1,2, 高鹏¹, 杨红新³, 周湛⁴, 雍岐龙², 包耀宗²

1昆明理工大学材料科学与工程学院，昆明650093 ；
2钢铁研究总院特钢所，北京100081；
3长城汽车股份有限公司，保定071000,
4江苏苏州钢铁集团技术中心，苏州215151

作者简介:满廷慧(1990-),女，硕上研究生(昆明理工大学),2012年辽宁科技大学(本科)毕业，微合金非调质钢研究。

Abstract

Abstract: The austenite dynamic recrystallizing process of VIF melted and forged 625 mm bar of Nb-V-Ti microalloying 0. 37C-1.45Mn non-quenched and tempered steel (/%: 0. 37C, 0. 60Si, 1. 45Mn, 0. 025Nb, 0. 078V, 0.017Ti) with single pass compression, strain rate 0. 1 ~ 10 s^-1 and reduction by 60% at 950 ~ 1 150 ℃ has been studied by using Gleeble-3800 thermal simulation machine. Results show that of Nb-V-Ti microalloying 0. 37C-1. 45Mn steel the higher deformation steel and the lower strain rate, the smaller deformation cumulative energy to occur the dynamic recrystallization and the more easily to carry out the dynamic crystallization. Due to containing Nb in steel, the activation energy of dynamic recrystallization of test steel is higher, i. e. Q_d =353. 80 kJ/mol.

摘要： 借助Gleeble-3800热模拟实验机研究了真空感应炉熔炼,并锻成φ25 mm棒材的Nb-V-Ti微合金化0.37C-1.45Mn非调质钢(/%:0.37C,0.60Si,1.45Mn,0.025Nb,0.078V,0.017Ti)在950~1150℃,形变速率0.1~10 s^-1,形变量60%的单道次压缩的奥氏体动态再结晶过程。结果表明,Nb-V-Ti微合金化0.37C-1.45Mn钢形变温度越高,形变速率越低,则发生动态再结晶的形变储能越小,越容易发生动态再结晶。试验用钢因含有Nb而动态再结晶激活能较高,为Q_d=353.80 kJ/mol。

关键词: Nb-V-Ti微合金化, 0. 37C-1., 45Mn非调质钢, , 动态再结晶

Man Tinghui , Gao Peng, Yang Hongxin, Zhou Zhan, Yong Qilong , Bao Yaozong. Behavior of Dynamic Recrystallization of Nb-V-Ti Microalloying 0.37C-1. 45Mn Non-Quenched and Tempered Steel[J]. Special Steel, 2014, 35(4): 66-68.

满廷慧, 高鹏, 杨红新, 周湛, 雍岐龙, 包耀宗. Nb-V-Ti微合金化0.37C-1.45Mn非调质钢动态再结晶行为[J]. 特殊钢, 2014, 35(4): 66-68.