Abstract.
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 \( \gamma\) -phase and the concentration distributions. The simulated time evolution of the \( \gamma\) -phase thickness and the concentration distribution in the \( \gamma\) -phase agree well with the experimental data, demonstrating the quantitative capabilities of the proposed model. The influences of the holding temperature and \( \gamma\) -phase thickness on the \( \gamma\) -phase growth behavior are analyzed based on the simulation results. The \( \gamma\) -phase growth velocity is found to decrease with increasing the \( \gamma\) -phase thickness and holding temperature. Simulations are also performed for the microstructural evolution during isothermal peritectic transformation of Fe-C alloys with the primary \( \delta\) -phase being an equiaxed dendrite under different holding temperatures. It is found that the driving force for \( \gamma\) -phase growth increases with decreasing temperature.
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Fan, Y., Fang, H., Tang, Q. et al. Cellular automaton modeling of peritectic transformation⋆. Eur. Phys. J. E 43, 17 (2020). https://doi.org/10.1140/epje/i2020-11939-x
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DOI: https://doi.org/10.1140/epje/i2020-11939-x