On the stress state dependence of the twinning rate and work hardening in twinning-induced plasticity steels |
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| Authors: | K Renard H Idrissi D Schryvers PJ Jacques |
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| Affiliation: | 1. Université catholique de Louvain (UCL), Institute of Mechanics, Materials and Civil Engineering, IMAP, Place Sainte Barbe 2, B-1348 Louvain La Neuve, Belgium;2. EMAT, Department of Physics, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium;1. Institute of Physical Metallurgy and Metal Physics, RWTH Aachen University, Aachen, 52074, Germany;2. Department of Ferrous Metallurgy, RWTH Aachen University, Aachen, 52072, Germany;3. Institute for Materials Applications in Mechanical Engineering, RWTH Aachen University, Aachen, 52062, Germany;1. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, PR China;2. School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 230026, PR China |
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| Abstract: | The influence of the stress state on the twinning rate and work hardening is studied in the case of an Fe–Mn–C TWIP steel strained in uniaxial tension, simple shear and rolling. The resulting stress–strain responses exhibit marked differences. The twinning rate, number of activated twinning systems in each grain, twin thickness and transmission of twins across grain boundaries are dependent on the imposed stress state during straining. Relationships between twin features and macroscopic work hardening rate are established. |
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