A mixed-mode model for partitioning phase transformations

A mixed-mode model for the interface velocity during partitioning phase transformations [J. Sietsma, S. van der Zwaag, Acta Mater. 52 (2004) 4143–4152] is reformulated and rigorously validated. Comparison with a numerical treatment shows that the model gives a near-exact description of the growth kinetics. In addition, the model provides information on the concentration profiles of the partitioning element. The mixed-mode growth model can be combined with a range of different microstructure models. As an example a combination with a Johnson–Mehl–Avrami extended volume model is shown.