Recrystallization Behavior of Deformed Austenite in High Strength Microalloyed Pipeline Steel
YANG Jing��hong1,2,LIU Qing��you2,SUN Dong��bai1,LI Xiang��yang2
1. School of Material Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China; 2. State Key Laboratory of Advanced Steel Processes and Products, China Iron and Steel Research Institute Group, Beijing 100081,China
Recrystallization Behavior of Deformed Austenite in High Strength Microalloyed Pipeline Steel
YANG Jing��hong1,2,LIU Qing��you2,SUN Dong��bai1,LI Xiang��yang2
1. School of Material Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China; 2. State Key Laboratory of Advanced Steel Processes and Products, China Iron and Steel Research Institute Group, Beijing 100081,China
ժҪ 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.
Abstract��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.
YANG Jing��hong;LIU Qing��you;SUN Dong��bai;LI Xiang��yang. Recrystallization Behavior of Deformed Austenite in High Strength Microalloyed Pipeline Steel[J]. �й������ڿ���, 2009, 16(1): 75-0.
YANG Jing��hong;LIU Qing��you;SUN Dong��bai;LI Xiang��yang. Recrystallization Behavior of Deformed Austenite in High Strength Microalloyed Pipeline Steel. Chinese Journal of Iron and Steel, 2009, 16(1): 75-0.