Continuous dynamic recrystallization (CDRX) is the dominant restoration mechanism of near- titanium alloys during hot deformation. But till now, there is seldom visual modeling of the process which limits its industrial application. Based on CDRX mechanisms characterized by low-angle grain boundaries (LAGBs) formed and partially transformed into high-angle grain boundaries (HAGBs), the present study established a cellular automata (CA) model to investigate the substructure evolution and mechanical response of Ti-10V-2Fe-3Al alloy. Besides, a new set of equations for subgrain rotation considering the effect of the -phase was integrated into the CA model to improve its applicability in titanium alloy. The model was validated by experimental results and then applied to predict the substructure evolution during hot working. Simulation analysis revealed that, except for high strain rates and temperatures, a high fraction of / phase boundaries could also promote the development of CDRX. The proposed CA model provided an effective method for microstructure optimization in hot forging of the Ti-10V-2Fe-3Al alloy.

中文翻译：

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Ti-10V-2Fe-3Al 合金连续动态再结晶的介观模拟

连续动态再结晶（CDRX）是近钛合金热变形过程中的主要恢复机制。但到目前为止，该过程的可视化建模还很少，限制了其工业应用。基于以小角度晶界（LAGB）形成并部分转变为高角度晶界（HAGB）为特征的CDRX机制，本研究建立了元胞自动机（CA）模型来研究Ti-的亚结构演化和机械响应。 10V-2Fe-3Al合金。此外，CA模型中还集成了一套新的考虑α相影响的亚晶旋转方程，以提高其在钛合金中的适用性。该模型经过实验结果验证，然后应用于预测热加工过程中的子结构演变。模拟分析表明，除了高应变率和温度之外，高比例的/相界也可以促进CDRX的发展。所提出的CA模型为Ti-10V-2Fe-3Al合金热锻显微组织优化提供了有效方法。