ЗЕРНОГРАНИЧНОЕ ПРОСКАЛЬЗЫВАНИЕ И МИГРАЦИЯ СПЕЦИАЛЬНЫХ ГРАНИЦ ЗЕРЕН В БИКРИСТАЛЛАХ AL. АТОМИСТИЧЕСКОЕ МОДЕЛИРОВАНИЕ

Translated title of the contribution: Grain-Boundary Shear-Migration Coupling in Al Bicrystals. Atomistic Modeling

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Abstract

The energy of grain boundary shears is calculated for symmetric grain boundaries (GBs) using ab initio methods and molecular-dynamic modeling in order to elucidate mechanisms that control GB shear-migration coupling in typical symmetric GBs, such as Σ3 (111), Σ5 (012), Σ5 (013) and Σ11 (113) tilt GBs, in Al bicrystal. The energy of generalized grain-boundary stacking faults (GB–SF) is determined, and the preferred directions and the energy barrier are established for grain-boundary slippage. It is shown that the relative slippage of neighboring grains at certain directions of particle shears is accompanied by conservative migration of GB in the direction perpendicular to its plain. The modeling data are comparative to known grain-boundary shear-migration coupling mechanisms in Al.
Translated title of the contributionGrain-Boundary Shear-Migration Coupling in Al Bicrystals. Atomistic Modeling
Original languageRussian
Pages (from-to)1874-1881
Number of pages7
JournalФизика твердого тела
Volume60
Issue number10
DOIs
Publication statusPublished - 2018

GRNTI

  • 29.00.00 PHYSICS

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  • VAK List

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