Scale-Bridging Thermodynamic and Kinetic Simulation (STKS)
Numerical investigation of the recrystallization kinetics by means of the KWC phase-field model with special order parameters
Modelling and Simulation in Materials Science and Engineering, 25, 045008, (2017)
The present paper proposes an extension to the phase-field model of Kobayashi, Warren and Carter (KWC) as described in (Warren et al 2002 Acta Mater.) to incorporate the recrystallization process which occurs during heat treatments of alloy systems with predeformed defect structure. The standard KWC model is extended by an additional order parameter for recrystallized grains and describes the general results for the steady-state moving boundary. The simulation results of the initial grain growth and recrystallization process in various systems show that the extended phase-field model is able to describe the influence of the initial grain boundaries on the recrystallization kinetics and to incorporate the misorientation dependency of the low angle grain boundary mobility which strongly influences the orientation distribution in the resulting microstructure.
Keyword(s): recrystallization; grain growth; phase-field modeling