Formation of Dislocations and Twins As a Result of Uniaxial Compression of Magnesium Single Crystals: Molecular Dynamics Simulation
- Авторы: Vlasova A.M.1,2, Nikonov A.Y.3
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Учреждения:
- Miheev Institute of Metal Physics, Ural Branch
- Ural Federal University named after the First President of Russia B.N. Yeltsin
- Institute of Strength Physics and Materials Science, Siberian Branch
- Выпуск: Том 63, № 3 (2018)
- Страницы: 331-338
- Раздел: Real Structure of Crystals
- URL: https://journals.rcsi.science/1063-7745/article/view/192424
- DOI: https://doi.org/10.1134/S1063774518030318
- ID: 192424
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Аннотация
An atomistic simulation of the deformation of ideal magnesium crystal along the \([11\bar 20]\) crystallographic axis has been performed. The evolution of structural defects under load at T = 300–350 K is considered in detail. It is established that the nucleation of dislocations in an ideal crystal occurs when the stress reaches a level of 0.1G (G is the shear modulus). The acting deformation modes are found to be prismatic slip of a dislocations and \(\{ 10\bar 13\} \) twinning. The formation of dislocation networks and dislocation sites in the twinning plane is observed. Some reactions are proposed to describe the dislocation evolution in the \((\bar 3034)\) plane.
Об авторах
A. Vlasova
Miheev Institute of Metal Physics, Ural Branch; Ural Federal University named after the First President of Russia B.N. Yeltsin
Автор, ответственный за переписку.
Email: alisa@imp.uran.ru
Россия, Yekaterinburg, 620041; Yekaterinburg, 620002
A. Nikonov
Institute of Strength Physics and Materials Science, Siberian Branch
Email: alisa@imp.uran.ru
Россия, Tomsk, 634021
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