A Phase-Field Simulation of Nucleation from Subgrain and Grain Growth in Static Recrystallization

Mayu Muramatsu; Yuichi Tadano; Kazuyuki Shizawa

doi:10.4028/www.scientific.net/MSF.584-586.1045

Paper Titles

Finite Element Investigation of the Effect of Hardening Behavior of Alloys on Equal Channel Angular Pressing Performance
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A Triple-Scale Crystal Plasticity Simulation on Yield Behavior of Annealed FCC Fine-Grained Metals
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Formation of Multiply-Twinned Particles during Two-Nanoparticles Agglomeration: The Results of MD Simulation
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Long-Term Microhardness Evolution in Ti-Ni Shape Memory Alloys Processed by Severe Cold Rolling
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A Phase-Field Simulation of Nucleation from Subgrain and Grain Growth in Static Recrystallization
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Application of Strain Gradient Plasticity Modelling to High Pressure Torsion
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Multiscale Crystal Plasticity Simulation with Pseudo-Three-Dimensional Model on Ultrafine-Graining Based on Evolution of Dislocation Structures
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Numerical Modeling of Dislocation-Grain Boundary Interaction and Continuum Mechanics Analyses for Mechanical Properties of Fine Grained Metals
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Multiscale Modeling of SPD Processes for Grain Refinement
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A Phase-Field Simulation of Nucleation from Subgrain and Grain Growth in Static Recrystallization

Abstract:

A new recrystallization phase-field method is proposed, in which the three stages of recrystallization phenomena, i.e., recovery, nucleation and nucleus growth are sequentially taken into account in a computation. From the information of subgrain patterns and crystal orientations in a polycrystal that are obtained by a dislocation-crystal plasticity FE analysis based on a reaction-diffusion model, subgrain groups surrounded by high angle boundary are found out. Next, subgrains in the group are coalesced into a nucleus by rotation of crystal orientation and migration of subgrain boundaries through a phase-field simulation. Then a computation of nucleus growth is performed also using the phase-field method on account of an autonomic incubation period of nucleation, in which stored dislocation energy assumes a role of driving force. It is shown that the present method can numerically reproduce the three stages of recrystallization as a sequence of computational procedure.