Publication Details

Saleh, A. A., Wen, W., Pereloma, E. V., McCormack, S. J., Tome, C. N. & Gazder, A. A. (2019). Experimental and Self-Consistent Modeling Study of De-twinning in a Twinning-Induced Plasticity Steel. JOM Journal of the Minerals, Metals and Materials Society, 71 (4), 1396-1403.


The effect of compression-tension loading on the microstructure evolution in a fully annealed Fe-24Mn-3Al-2Si-1Ni-0.06C twinning-induced plasticity steel has been investigated. Electron back-scattering diffraction was used to track a region of interest at true strains of 0 (initial), − 0.09 (after forward compression loading), and 0.04 (after reverse tension loading). All deformation twins detected after forward compression loading were found to de-twin upon subsequent reverse tension loading, likely due to the reverse glide of partial dislocations bounding the twins. The reverse loading behavior, including the twinning and de-twinning processes, was successfully simulated using a recently modified dislocation-based hardening model embedded in the visco-plastic self-consistent polycrystal framework, taking into account the dislocation accumulation/annihilation, as well as the twin barrier and back-stress effects.

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