ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2014, Vol. 35 ›› Issue (4): 66-68.

• 组织和性能 • 上一篇    

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. 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
  • 收稿日期:2014-03-31 出版日期:2014-08-01 发布日期:2022-09-03
  • 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。

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

Man Tinghui1,2, Gao Peng1, Yang Hongxin3, Zhou Zhan4, Yong Qilong2, Bao Yaozong2   

  1. 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 Published:2014-08-01 Online:2022-09-03

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Qd=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

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. Qd =353. 80 kJ/mol.