Thermal Stability of Retained Austenite in TRIP Steel After Different Treatments  

作　　者：SHI Wen LI Lin Bruno C De Cooman Patrick Wollants YANG Chun-xia 

机构地区：[1]Department of Material Science and Engineering, Shanghai University, Shanghai 200072, China [2]Laboratory for Iron and Steel Making, Department of Material Science and Engineering, Technologiepark 903 BE-9052, Ghent, Belgium [3]Department MTM, KU Leuven, Heverlee B-3001, Belgium

出　　处：《Journal of Iron and Steel Research International》2008年第1期61-64,共4页

基　　金：Item Sponsored by National Natural Science Foundation of China(50171038);Belgium-China Bilateral Project BIL04/13

摘　　要：Thermal decomposition of retained austenite in TRIP steel was investigated by means of differential scanning calorimetry（DSC）.The decomposition curve was abnormal,and the decomposition temperature and the activation energy were measured by the Kissinger method,which were all higher than those in quenched steel.The thermal decomposition data of samples soaked in liquid nitrogen after TRIP treatment were all similar to those without additional low temperature treatment.It indicated that there is a high thermal stability in retained austenite of the TRIP steel at low temperature,which was also proved by XRD analysis.Thermal decomposition of retained austenite in TRIP steel was investigated by means of differential scanning calorimetry（DSC）.The decomposition curve was abnormal,and the decomposition temperature and the activation energy were measured by the Kissinger method,which were all higher than those in quenched steel.The thermal decomposition data of samples soaked in liquid nitrogen after TRIP treatment were all similar to those without additional low temperature treatment.It indicated that there is a high thermal stability in retained austenite of the TRIP steel at low temperature,which was also proved by XRD analysis.

关 键 词：TRIP steel retained austenite thermal stability differential scanning calorimetry 

分 类 号：TG14[一般工业技术—材料科学与工程]