Effect of Controlled Cooling After Hot Rolling on Mechanical Properties of Hot Rolled TRIP Steel
WU Di1,LI Zhuang1,2,L�W Hui��sheng3
1. State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, Liaoning, China; 2. Department of Material Engineering, Shenyang Institute of Aeronautical Engineering, Shenyang 110034, Liaoning, China;3. Department of Science and Technology Information, China Iron and Steel Research Institute Group, Beijing 100081, China
Effect of Controlled Cooling After Hot Rolling on Mechanical Properties of Hot Rolled TRIP Steel
WU Di1,LI Zhuang1,2,L�W Hui��sheng3
1. State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, Liaoning, China; 2. Department of Material Engineering, Shenyang Institute of Aeronautical Engineering, Shenyang 110034, Liaoning, China;3. Department of Science and Technology Information, China Iron and Steel Research Institute Group, Beijing 100081, China
ժҪ A three��step cooling pattern on the runout table (ROT) was conducted for the hot rolled TRIP steel. Microstructural evolution during thermomechanical controlled processing (TMCP) was investigated. Processing condition of controlled cooling on a ROT in the laboratory rolling mill was discussed. The results indicated that the microstructure containing polygonal ferrite, granular bainite and a significant amount of the stable retained austenite can be obtained through three��step cooling on the ROT after hot rolling. TMCP led to ferrite grain refinement. Controlled cooling after hot rolling resulted in the stability of the remaining austenite and a satisfactory TRIP effect. Excellent mechanical properties were obtained through TMCP for the hot rolled TRIP steel.
Abstract��A three��step cooling pattern on the runout table (ROT) was conducted for the hot rolled TRIP steel. Microstructural evolution during thermomechanical controlled processing (TMCP) was investigated. Processing condition of controlled cooling on a ROT in the laboratory rolling mill was discussed. The results indicated that the microstructure containing polygonal ferrite, granular bainite and a significant amount of the stable retained austenite can be obtained through three��step cooling on the ROT after hot rolling. TMCP led to ferrite grain refinement. Controlled cooling after hot rolling resulted in the stability of the remaining austenite and a satisfactory TRIP effect. Excellent mechanical properties were obtained through TMCP for the hot rolled TRIP steel.
WU Di;LI Zhuang;L�W Hui��sheng. Effect of Controlled Cooling After Hot Rolling on Mechanical Properties of Hot Rolled TRIP Steel[J]. �й������ڿ���, 2008, 15(2): 65-0.
WU Di;LI Zhuang;L�W Hui��sheng. Effect of Controlled Cooling After Hot Rolling on Mechanical Properties of Hot Rolled TRIP Steel. Chinese Journal of Iron and Steel, 2008, 15(2): 65-0.
2008, Vol. 15 
