Fan Yiming, Fang Hui, Tang Qianyu, Zhang Qingyu, Pan Shiyan, Zhu Mingfang
Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, 211189, Nanjing, China.
Shagang School of Iron and Steel, Soochow University, 215137, Suzhou, China.
Eur Phys J E Soft Matter. 2020 Mar 9;43(3):17. doi: 10.1140/epje/i2020-11939-x.
A two-dimensional multiphase cellular automaton (CA) model is proposed for the prediction of growth kinetics and microstructural evolution during peritectic transformation of Fe-C alloys. The proposed model is validated by comparing the simulation results with the experimental measurements and analytical predictions for the growth kinetics of the [Formula: see text] -phase and the concentration distributions. The simulated time evolution of the [Formula: see text] -phase thickness and the concentration distribution in the [Formula: see text] -phase agree well with the experimental data, demonstrating the quantitative capabilities of the proposed model. The influences of the holding temperature and [Formula: see text] -phase thickness on the [Formula: see text] -phase growth behavior are analyzed based on the simulation results. The [Formula: see text] -phase growth velocity is found to decrease with increasing the [Formula: see text] -phase thickness and holding temperature. Simulations are also performed for the microstructural evolution during isothermal peritectic transformation of Fe-C alloys with the primary [Formula: see text] -phase being an equiaxed dendrite under different holding temperatures. It is found that the driving force for [Formula: see text] -phase growth increases with decreasing temperature.
