%0 Journal Article %T Kinetics of Austenite Recrystallization during the Annealing of Cold-rolled Fe-Mn-Al-C Steel %J Iranian Journal of Materials Forming %I Shiraz University %Z 2383-0042 %A Sohrabizadeh, M. A. %A Mazaheri, Y. %A Sheikhi, M. %D 2020 %\ 04/01/2020 %V 7 %N 1 %P 84-91 %! Kinetics of Austenite Recrystallization during the Annealing of Cold-rolled Fe-Mn-Al-C Steel %K Fe-Mn-Al-C steel %K recrystallization kinetics %K JMAK model %R 10.22099/ijmf.2020.35660.1145 %X In the current study, the recrystallization behavior of 75% cold-rolled Fe-22Mn-10Al-1.4C steel during annealing at 750, 770, 790, 810, and 830°C was studied. X-ray diffraction patterns and optical microscopy were used to characterize microstructures. The Vickers Micro-hardness test was used to characterize recrystallization kinetics during annealing. Johnson-Mehl-Avrami-Kolmogorov (JMAK) model was used to evaluate the experimental data. The as-homogenized microstructure illustrated only austenite with a high fraction of annealing twins, and austenite to martensite phase transformation was not observed after quenching at a high temperature and also until high thickness reduction. Avrami exponent was decreased from 0.76 to 0.42, with increasing the annealing temperature from 750 to 830°C. The activation energy value was determined to be ~175 kJ/mol, which was slightly higher than the diffusion activation energy of carbon in austenite. %U https://ijmf.shirazu.ac.ir/article_5743_99f66b6eda0c34ee16031678402528e8.pdf