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| Tensile Strain Hardening Behavior of FeMnC TWIP Steels |
| ZHOU Xiaofen1，FU Renyu1，SU Yu1，2，LI Lin1 |
| 1.School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China；2.School of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620, China |
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Abstract The strain hardening behaviour of FeMnC TWIP steel was investigated. It was showed there existed different n values in different phases during the tensile strain hardening of samples. There were also two strain hardening mechanisms: in the region of 0.4%3% strain, samples were strengthened by dislocation piling, but in the region of 10%50% strain, by twinning. In these two regions, the n value kept constant, However, n increased continuously in the region of 4%10%. The microstructure observation showed that the fractures of the FeMnC TWIP steel were typical ductile fracture pattern.
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Received: 01 January 1900
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2009, Vol. 44 
