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Tensile Properties of TWIP Steel at High Strain Rate

  • Rong-gang Xiong
  • Ren-yu Fu
  • Yu Su
  • Qian Li
  • Xi-cheng Wei
  • Lin Li
Article

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.

Key words

twin-induced plasticity strain rate strain-hardening deformation twin 

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Copyright information

© China Iron and Steel Research Institute Group 2009

Authors and Affiliations

  • Rong-gang Xiong
    • 1
  • Ren-yu Fu
    • 1
  • Yu Su
    • 1
  • Qian Li
    • 1
  • Xi-cheng Wei
    • 1
  • Lin Li
    • 1
  1. 1.School of Materials Science and EngineeringShanghai UniversityShanghaiChina

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