Thermal Stability of Retained Austenite in TRIP Steel After Different Treatments

钢铁研究学报(英文版), 2008, 15(1): 61-64.

^1, , ^2, , ^3, , ^4, , ^5,

1.Department of Material Science and Engineering, Shanghai University, Shanghai 200072, China

2.Department of Material Science and Engineering, Shanghai University, Shanghai 200072, China

3.Laboratory for Iron and Steel Making, Department of Material Science and Engineering, Technologiepark 903 BE-9052, Ghent, Belgium

4.Department MTM, KU Leuven, Heverlee B-3001, Belgium

5.Department of Material Science and Engineering, Shanghai University, Shanghai 200072, China

基金项目: Belgium-China Bilateral Project BIL(04/13) 国家自然科学基金(50171038)

Thermal Stability of Retained Austenite in TRIP Steel After Different Treatments

SHI Wen ^1, , LI Lin ^2, , Bruno C De Cooman ^3, , Patrick Wollants ^4, , YANG Chun-xia ^5,

1.Department of Material Science and Engineering, Shanghai University, Shanghai 200072, China

2.Department of Material Science and Engineering, Shanghai University, Shanghai 200072, China

3.Laboratory for Iron and Steel Making, Department of Material Science and Engineering, Technologiepark 903 BE-9052, Ghent, Belgium

4.Department MTM, KU Leuven, Heverlee B-3001, Belgium

5.Department of Material Science and Engineering, Shanghai University, Shanghai 200072, China

Keywords： TRIP steel

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.

参考文献

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