Recrystallization Behavior of Deformed Austenite in High Strength Microalloyed Pipeline Steel

作     者：YANG Jing-hong LIU Qing-you SUN Dong-bai LI Xiang-yang 

作者机构：School of Material Science and Engineering University of Science and Technology Beijing Beijing 100083 China State Key Laboratory of Advanced Steel Processes and Products China Iron and Steel Research Institute GroupBeijing 100081 China 

出 版 物：《Journal of Iron and Steel Research International》 (JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL)

年 卷 期：2009年第16卷第1期

页      面：75-80页

核心收录：

学科分类：0820[工学-石油与天然气工程] 080706[工学-化工过程机械] 08[工学] 0807[工学-动力工程及工程热物理] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 082003[工学-油气储运工程] 

基　　金：Item Sponsored by National Key Technologies Research and Development Program of China (2006BAE03A15) 

主　　题：dynamic recrystallization static recrystallization microalloyed steel austenite 

摘      要：Using methods of single-hit hot compression and stress relaxation after deformation on a Gleeble 1500D thermomechanical simulator, the curves of flow stress and stress relaxation, the microstructure and the recrystallization behavior of Nb-V-Ti high strength microalloyed low carbon pipeline steel were studied, and the influence of the thermomechanical treatment parameters on dynamic and static recrystallization of the steel was investigated. It was found that microalloying elements improved the deformation activation energy and produced a retardation of the recrystallization due to the solid solution and precipitation pinning. The deformation conditions such as deformation temperature, strain, and strain rate influenced the recrystallization kinetics and the microstructure respectively. Equations obtained can be used to valuate and predict the dynamic and static recrystallizations.