Plastic strain localization in polycrystalline titanium. Numerical simulation
| Autor: | Ruslan Balokhonov, E. Emelianova, Varvara Romanova, M. V. Sergeev |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
General Physics and Astronomy chemistry.chemical_element пластичность кристаллов Plasticity 01 natural sciences Condensed Matter::Materials Science Computer Science::Emerging Technologies Condensed Matter::Superconductivity микромеханика 0103 physical sciences Physics::Atomic and Molecular Clusters Boundary value problem Composite material Physics::Chemical Physics численное моделирование 010302 applied physics 010308 nuclear & particles physics поликристаллическая структура Micromechanics Finite element method chemistry Crystallite Dislocation Deformation (engineering) локализованная деформация Titanium |
| Zdroj: | Russian physics journal. 2020. Vol. 62, № 9. P. 1539-1551 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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