Modelling of Grain Growth in nano-polycrystalline materials

Tomasz Wejrzanowski 

Warsaw University of Technology, Faculty of Materials Science and Engineering (InMat), Wołoska 141, Warszawa 02-507, Poland

Abstract

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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Presentation: Oral at Struktury i modelowanie nanokryształów, by Tomasz Wejrzanowski
See On-line Journal of Struktury i modelowanie nanokryształów

Submitted: 2006-02-27 09:52
Revised:   2009-06-07 00:44