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| Tensile Properties of TWIP Steel at High Strain Rate |
| XIONG Rong��gang,FU Ren��yu,SU Yu,LI Qian,WEI Xi��cheng,LI Lin |
| School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China |
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Abstract Tensile tests of TWIP steels of two compositions are performed in the strain rate range of 10-5-103 s-1. Results indicate that steel 1# does not exhibit TWIP effect but deformation��induced martensitic transformation appears only. There exists TWIP effect in steel 3#. Tensile properties at room temperature are sensitive to strain rate in the studied strain rate ranges. Analysis on the relationship between strain��hardening exponent and strain rates shows that strain��induced martensitic transformation and formation of twins during deformation have significant influence on their strain��hardening behavior.
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Received: 01 January 1900
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2009, Vol. 16 
