It is shown that separation of scalar dislocation density into two parts, giving densities of mobile and immobile dislocations, is providing a possibility to predict continuous dynamic recrystallization (DRX) process caused by severe plastic deformation of metallic materials. The proposed approach is making it possible to predict a rather extent set of material microstructure properties that can be measured experimentally, based on a minimum set of "tuning" parameters. Received predictions are verified by comparison to experimental results and predictions received using another known dislocation plasticity and dynamic recrystallization models.