A model for dynamic recrystallization was presented, which was developed for face-centered cubic materials with low stacking fault energies. The critical conditions for nucleation were derived and a nucleation model was used that defines the nucleation rate as the velocity determining factor and that was based upon the thermal climb of edge dislocations. Stable nuclei grew in dependence on the grain boundary mobility, thus a grain size distribution could be derived. During deformation, a time-dependent dislocation density gradient developed in the recrystallized grains, which led to a corresponding dislocation density over all recrystallized grains. If the recrystallized grain fraction meets the critical conditions for the onset of recrystallization, a second cycle will start. The development of grain size and recrystallized fraction was compared with measured data.

On Modelling of Dynamic Recrystallisation of FCC Materials with Low Stacking Fault Energy. C.Sommitsch, W.Mitter: Acta Materialia, 2006, 54[2], 357-75