Modelling study on recrystallization, recovery and their temperature dependence in inhomogeneously deformed materials

A hybrid analytical/Monte Carlo model is set up for studying recovery and recrystallization at various annealing temperatures after inhomogeneous deformation. Equations are derived to describe the nucleation rate and the evolution of the stored energy as functions of local deformation, temperature and time. The analytical equations and a description of the inhomogeneous pre-deformation are introduced into a Monte Carlo model. The microstructure evolution is simulated for various temperatures and times. The characteristics of recrystallization after inhomogeneous deformation and the interaction between recrystallization and recovery are well reproduced and generated by the model. Due to the inhomogeneous pre-deformation, the recrystallized fraction varies strongly depending on the given processing conditions. The simulation calculations agree well with experiments for both morphological features and quantitative analysis.