Internal Friction on the Bake-Hardening Behavior of 0.11C-1.67Mn-1.19Si TRIP Steel

材料科学技术（英文）, 2009, 25(1): 141-144.

^1, , ^2, , ^3, , ^4, , ^5, , ^6,

1.School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China

2.School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China;Shanghai University of Engineering Science, Shanghai 200336, China

3.Automotive Engineering Academy of SAIC Motor Co., Ltd., Shanghai 201206, China

4.School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China

5.School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China

6.Shanghai Baosteel Plates Co., Ltd., Shanghai 201900, China

基金项目: The authors thank Ansteel Group Co. and the Na-tional Engineering and Research Center of Advanced Steel Technology for the financial support

Internal Friction on the Bake-Hardening Behavior of 0.11C-1.67Mn-1.19Si TRIP Steel

Renyu Fu ^1, , Yu Su ^2, , Ping Ye ^3, , Xicheng Wei ^4, , Lin Li ^5, , Jicheng Zhang ^6,

1.School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China

2.School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China;Shanghai University of Engineering Science, Shanghai 200336, China

3.Automotive Engineering Academy of SAIC Motor Co., Ltd., Shanghai 201206, China

4.School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China

5.School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China

6.Shanghai Baosteel Plates Co., Ltd., Shanghai 201900, China

Keywords： TRIP steel

The bake-hardening (BH) values and the "internal friction-temperature" spectrums were studied for the baked 0.11C-1.67Mn-1.19Si TRIP (transformation induced plasticity) specimens with 0%, 2% and 6% prestrain. Results show that the experimental TRIP steel deserves good bake-hardening ability and Cottrell atmosphere is the reason for its bake hardening characteristic. It is also concluded that both the number and the saturation degree of Cottrell atmosphere might affect the BH value of TRIP steel.

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