Nano-polycrystalline materials exhibit distinctly different mechanical and physical properties, which in particular are related to the high density of the grain boundaries and their geometrical and physical parameters as well. Despite that fact, thermal stability of such materials is significantly reduced in comparison to the materials with grains of micrometre size.

In these studies the influence of the grain size homogeneity and their crystallographic orientations on grain growth process were simulated.

The results show that both, normal and abnormal grain growth is possible for particular internal and external conditions. In this context the practical aspects, especially in design of nanomaterials obtained by different fabrication techniques, are discussed.

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