Simulation of the Kinetics of Grain-Boundary Nucleated Phase Transformations
The kinetics of phase transformations for which nucleation occurs on parent-micro-structure grain boundaries, and the resulting microstructures, were investigated by means ofgeometric simulations. The inﬂuences of parent microstructure grain-boundary area density,parent grain-size distribution and parent→product kinetics were analysed. Additionally, thesimulated kinetics were compared with predictions from two kinetic models, namely a modelproposed for spatially random nucleation and a model proposed for grain-boundary nucleation.It was found that the simulated transformed fraction as function of time lies in between the twomodel predictions for all investigated parent microstructures and parent→product kinetics.
Yves Bréchet, Emmanuel Clouet, Alexis Deschamps, Alphonse Finel and Frédéric Soisson
E. A. Jägle and E. J. Mittemeijer, "Simulation of the Kinetics of Grain-Boundary Nucleated Phase Transformations", Solid State Phenomena, Vols. 172-174, pp. 1128-1133, 2011