Dynamic recrystallization behavior of new transformation-twinning induced plasticity steel

The dynamic recrystallization behavior of new transformation-twinning induced plasticity steel composing of Fe-0.11C-21Mn-2.7Si-1.6Al has been studied from the numerical and experimental point of views. Accordingly, the hot compression tests have been conducted over the wide range of temperature and strain rate (100-1100 °C and 0.001-1 s−1). The related stress and strain peaks, the critical stress and strain, the recrystallization volume fraction and the recrystallized grain size have been measured to quantify the recrystallization behavior of experimental alloy. Different dynamic recrystallization mechanisms including continuous, discontinuous and geometrical ones have been proposed to justify the corresponding results of various thermomechanical processing (TMP) schemes. Relying on these findings the processing maps have been also developed for more efficient development of the new materials.