Modelling of microstructural evolution in thermomechanical processing of structural steels

Computational models have been widely applied to the optimum design of chemistry and manufacturing process of structural steels. The metallurgical phenomena in thermomechanical treatment of steel, such as austenite grain growth, recrystallization and growth, carbonitride precipitation and austenite to ferrite phase transformation can be predicted by the model. This review describes the outline of the computer simulation model of microstructural evolution on the basis of chemical thermodynamics and classical nucleation and growth theory. The concept of the modelling, fundamental equations and the techniques and algorithm for the modelling of microstructure are introduced.