Abstract
The paper presents a modified cellular automaton (CA) model for quantitative and topographic prediction of dynamic recrystallization (DRX) of Ni-based superalloy during hot deformation. To describe the effect of deformation on grain topology, an updated topology deformation technique was used in the model, in which a cellular coordinate system and a material coordinate system were established separately. The cellular coordinate system remains unchangeable in the whole simulation. The material coordinate system and the corresponding grain boundary shape change with deformation. The grain topography, recrystallization fraction and average grain size were also predicted. The simulated results agree well with the experimental data in terms of average grain size and flow stress, suggesting that the modified CA model is a reliable numerical approach for predicting grain evolution during dynamic recrystallization.
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© 2016 TMS (The Minerals, Metals & Materials Society)
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Chen, F., Cui, Z. (2016). Modeling the Dynamic Recrystallization: A Modified Cellular Automaton Method. In: Holm, E.A., et al. Proceedings of the 6th International Conference on Recrystallization and Grain Growth (ReX&GG 2016). Springer, Cham. https://doi.org/10.1007/978-3-319-48770-0_9
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DOI: https://doi.org/10.1007/978-3-319-48770-0_9
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48626-0
Online ISBN: 978-3-319-48770-0
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