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

Abstract

The multiphase field modelling is a powerful tool to understand sufficiently complicated material transformation 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.