Grain size evolution in dynamic recrystallizaticn

Dynamic recrystallization is characterized by cyclic events nucleation and grain growth during plastic deformation. The evolution of grain size distribution in dynamic recrystallization was investigated by a stochastic model of nucleation-and-growth. Scaling relations representing characteristic grain size and recrystallization cycle were derived from nucleation rate I and growth rate R'. The grain size evolve from an initial distribution to a steady-state one that is approximated by a log-normal distribution. A universal relation between deformation conditions (i.e., stress and temperature) and the steady-state grain size were formulated for recovery creep of minerals.