Calibration of phase field parameters demonstrated on kinetics of a shrinking single grain |
| |
Authors: | F D Fischer G A Zickler J Svoboda |
| |
Institution: | 1. Institute of Mechanics, Montanuniversit?t Leoben, Leoben, Austriamechanik@unileoben.ac.at;3. Institute of Mechanics, Montanuniversit?t Leoben, Leoben, Austria;4. Institute of Physics of Materials, Academy of Science of the Czech Republic, Brno, Czech Republic |
| |
Abstract: | The phase field method is frequently employed to simulate evolution of rather complex microstructures. In order to accurately describe the real kinetics of a specific material system, the phase field parameters must be calibrated to standard thermodynamic quantities such as interface mobilities or interface energies. This letter presents a convenient method, based on thermodynamic modelling of shrinking of a single grain embedded in single crystal (matrix), how to calibrate the phase field parameters. It also shows, how the required thermodynamic quantities can be met by proper rescaling of a phase field simulation carried out for given phase field parameters. |
| |
Keywords: | Thermodynamic quantities phase field method thermodynamic extremal principle grain shrinkage |
|
|