Heterogeneous deformation in twinning-induced plasticity steel |
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| Authors: | BC De Cooman Jinkyung Kim Seil Lee |
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| Affiliation: | 1. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, PR China;2. Department of Materials Science and Engineering, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto 606-8501, Japan;3. Elements Strategy Initiative for Structural Materials (ESISM), Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto, 606-8501, Japan;4. Advanced Steel Processing and Products Research Center, Department of Metallurgical and Materials Engineering, Colorado School of Mines, Golden, CO 80401, USA |
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| Abstract: | The influence of deformation localization during tensile deformation on the development of crystallographic texture in twinning-induced plasticity (TWIP) steel is reported. Whereas Al-added TWIP steel deforms homogeneously before the critical strain of onset of serrations, plastic deformation in Al-free TWIP steel occurs by propagation of isolated Portevin–Le Chatelier bands from the early stage of plastic deformation. The crystallographic texture evolution of both steels is, however, very similar. Deformation leads to the development of a Cu-type texture characterized by the strengthening of the rotated Brass component rather than the pure Brass component. |
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