Abstract. A computer programme based on the Monte Carlo method is created for simulation of primary recrystallization in deformed metals. The introduced new model of the initial structure of the metal is consistent with the experimental knowledge, thus reflecting the nonuniformity of the deformation process which leads to nonuniform nucleation and growth on the stage of primary recrystallization. A new mechanism for estimation of the thermodynamic probability considering the nonstability of the activation energy is offered. The new model and mechanism are a better approximation to the real processes.

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