Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 528, Issue 24, Pages 7310-7316Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2011.06.011
Keywords
epsilon-Martensitic transformation; Twinning induced plasticity; Dynamic strain aging; Work hardening rate; Stacking fault energy
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The tensile properties of carbon-containing twinning induced plasticity (TWIP) steels and their temperature dependence were investigated. Two steels with carbon concentrations of 0.6% and 0.8% (w/w) were tensile-tested at 173, 223, 273, 294, and 373 K. Three deformation modes were observed during tensile testing: epsilon-martensitic transformation, deformation twinning, and dynamic strain aging. The characteristic deformation mode that contributed to the work hardening rates changed with the deformation temperature and chemical compositions. The work hardening rate in the carbon-containing TWIP steels increased according to the deformation modes in the following order: epsilon-martensitic transformation > deformation twinning > dynamic strain aging. (C) 2011 Elsevier B.V. All rights reserved.
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