Mapping of multiphase field model parameters to physical factors in order to simulate desired phase transformations

The multiphase field modelling is a powerful tool to understand sufficiently complicated material transforma-tion phenomena. The numerical implementation of this modelling technique faced many challenges and finally Ohno and Matsuura (2009) provided a consistent model which overcame some of the numerical artifacts of its predecessors. However, the Ohno and Matsuura model has not had a robust numerical implementation. This difficulty in implementation is due to the complicated nature of equations that arise from the model. Furthermore, fitting the model for the desired problem needs a thorough understanding of the behaviour of the model parameters. Hence, this work uses an FEM based solver to understand the use of parameters in a multiphase field model and their effect on interface characteristics. Finally, it is shown how the parameters of the model can be tuned to simulate common types of phase transformation.

Automated summary

The multiphase field modelling is a powerful tool for understanding complex material transformation phenomena. The Ohno and Matsuura model, although consistent, faces challenges in numerical implementation due to the complicated nature of equations and the need for detailed understanding of the model parameters. This study utilizes an FEM based solver to investigate the use and impact of parameters on interface characteristics in a multiphase field model, and demonstrates how the model parameters can be adjusted to simulate common types of phase transformation.