Abstract
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.
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