Phase-Field Modeling for Dynamic Recrystallization
Phase-Field Modeling for Dynamic Recrystallization
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DOI：
10.1007/978-3-319-19440-0_20
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
T. Takaki;A. Yamanaka;Y. Tomita
中科院分区：
文献类型：
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作者：
T. Takaki;A. Yamanaka;Y. Tomita
热加工是金属材料在高于再结晶温度的高温下加工的过程。中低层错能金属在热加工过程中发生动态再结晶（DRX）。动态再结晶晶粒的形核和长大在很大程度上影响了DRX材料在热加工过程中的力学性能。本文综述了相场法作为一种强大的模拟材料微观结构演变的数值工具在DRX过程中变形和微观结构模拟中的应用。首先，介绍了多相场动态再结晶（MPF-DRX）模型，该模型可以基于多相场方法模拟的DRX微观结构演变来模拟计算域的力学行为。其次，建立了热加工多尺度模型，采用有限元方法模拟宏观变形，采用MPF-DRX方法模拟微观组织演变。
Hot working is a process in which metallic materials are worked at the elevated temperatures above the recrystallization temperature. During the hot working of the low-to-medium stacking fault energy metals, the dynamic recrystallization (DRX) occurs. The mechanical properties of the DRX materials during the hot working are largely affected by the nucleation and growth of the dynamic recrystallized grains. In this article, the application of a phase-field method, which has emerged as a powerful numerical tool to simulate the material microstructure evolutions, to the simulations of the deformation and microstructure during the DRX is reviewed. First, the multi-phase-field dynamic recrystallization (MPF-DRX) model, which can simulate the mechanical behaviors of a computational domain based on the DRX microstructure evolutions simulated by the multi-phase-field (MPF) method, is introduced. Next, a hot-working multi-scale model, where the macro deformation is simulated by the finite element (FE) method and the microstructure evolution is simulated by the MPF-DRX method, is presented.