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Plastic strain localization in polycrystalline titanium. Numerical simulation E. S. Emelianova, V. A. Romanova, R. R. Balokhonov, M. V. Sergeev

Contributor(s): Romanova, Varvara A | Balokhonov, Ruslan R | Sergeev, Maxim V | Emelianova, Evgeniya SMaterial type: ArticleArticleContent type: Текст Media type: электронный Subject(s): микромеханика | пластичность кристаллов | поликристаллическая структура | численное моделирование | локализованная деформацияGenre/Form: статьи в журналах Online resources: Click here to access online In: Russian physics journal Vol. 62, № 9. P. 1539-1551Abstract: The paper presents numerical simulation of polycrystalline titanium deformation in terms of the crystal plasticity theory. Based on the experimental data, a three-dimensional polycrystalline model is generated by a method of step-by-step packing. Constitutive relations for the deformation behavior of grains are based on the crystal plasticity theory with regard to the crystalline structure and dislocation glide in hexagonal closepacked crystal lattices. The boundary value problem of elastoplastic deformation is solved numerically using the finite element method. The proposed model is tested by elastoplastic deformation of titanium single crystals having different orientation. The proposed model is used to study the influence of the crystallographic orientation on localized plastic deformation in polycrystals.
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The paper presents numerical simulation of polycrystalline titanium deformation in terms of the crystal
plasticity theory. Based on the experimental data, a three-dimensional polycrystalline model is generated by
a method of step-by-step packing. Constitutive relations for the deformation behavior of grains are based on
the crystal plasticity theory with regard to the crystalline structure and dislocation glide in hexagonal closepacked
crystal lattices. The boundary value problem of elastoplastic deformation is solved numerically using
the finite element method. The proposed model is tested by elastoplastic deformation of titanium single crystals
having different orientation. The proposed model is used to study the influence of the crystallographic
orientation on localized plastic deformation in polycrystals.

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