Abstract
A systematic investigation of the evolution of deformation microstructure and texture of twinning-induced plasticity (TWIP) steel during cold rolling has been carried out using electron backscatter diffraction and X-ray diffraction, as well as viscoplastic self-consistent simulations. It is found that extensive twinning leads to the formation of the strong Brass {110}〈112〉 and Goss {110}〈001〉 components in TWIP steel even at low strains. At higher reduction, heterogeneous deformation contributes to further strengthening of Brass (Bs) component. The origin and stability of Bs component as well as the impact of the evolution of texture and microstructure on mechanical anisotropy is further explored using viscoplastic self-consistent simulations.
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Acknowledgments
This study was carried out as an extension to a research program funded by Tata Steel, Jamshedpur, India. The constant encouragement received from Prof. R. K. Ray and Dr. D. Bhattacharjee (both Tata Steel R&D) is gratefully acknowledged. The facilities set up at the Indian Institute of Science, Bangalore, namely, the Institute X-ray facility and Advanced Facility for Microscopy and Microanalysis (AFMM) was utilized in this study. Thanks are due to Prof. I Samajdar for providing access to the National facility for OIM at IIT Bombay and to R. Madhavan for his help in carrying out EBSD.
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Manuscript submitted February 13, 2012.
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Gurao, N.P., Kumar, P., Bhattacharya, B. et al. Evolution of Crystallographic Texture and Microstructure During Cold Rolling of Twinning-Induced Plasticity (TWIP) Steel: Experiments and Simulations. Metall Mater Trans A 43, 5193–5201 (2012). https://doi.org/10.1007/s11661-012-1346-7
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DOI: https://doi.org/10.1007/s11661-012-1346-7