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Modelling of plastic deformation of nano-polycrystalline materials

Romuald Dobosz ,  Tomasz Wejrzanowski ,  Krzysztof J. Kurzydlowski 

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


Nano-polycrystalline materials are characterized by a significant volume fraction of atoms which need to be viewed as residing at the grain boundaries. The characteristics of these boundaries have a considerable influence on plastic deformation of nano-materials. In order to model this influence quantitatively, two-phase finite element model was developed in which the generalized Hill potential theory for modeling the anisotropic plasticity of grain boundaries was used. The results of numerical simulations show the influence of different parameters on plastic deformation of nano-polycrystalline materials. The simulations were also used to study the grain size effect and grain size homogeneity.


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Presentation: Poster at E-MRS Fall Meeting 2008, Symposium K, by Romuald Dobosz
See On-line Journal of E-MRS Fall Meeting 2008

Submitted: 2008-07-02 15:07
Revised:   2009-06-07 00:48