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Three-Dimensional Monte Carlo Simulation of Primary Recrystallization and Grain Growth in Metals with Texture

In the present paper the the Monte Carlo (MC) method is applied for the simulation of primary recrystallization and grain growth in metallic materials. Both processes are influenced by the distribution of the crystallographic orientations in the material. In the case of strong textures, most of the grain boundaries have a low misorientation. Such low angle boundaries are generally assumed to have a mobility much lower than the mobility of high angle boundaries. In the present MC-model, these anisotropic mobilities are realised by introducing modified flip rates. The three-dimensional simulations show the strong influence of the initial texture and of the mobilities on the growth kinetics as well as on the evolution of the texture. It is demonstrated that deviations from the parabolic time law of grain growth and texture alterations, both observed experimentally, can be simulated in a quite satisfying manner. Furthermore, the application of the method to model primary recrystallization is discussed. It turns out that the growth of the nuclei influenced by the local surrounding (grain boundaries, misorientation, defect density) can be simulated very well by the MC-model.