In this article we discussed issues of description of polycrystal defect structure evolution during plastic deformation. The mathematical model that allows to describe the interaction of dislocations and grain boundaries at the atomic level and enables to analyze this interaction for various misorientation of grains and the boundary type is proposed and numerically implemented. For this purpose, we applied the molecular dynamics method and the interatomic potential based on the embedded-atom method (EAM). The characteristic types of dislocation structures formed near the boundary and their role during plastic deformation are revealed. The mechanism of severe plastic deformation based on the emission of dislocation loops from the boundary is studied, which indicates the boundary as an active source of dislocations.
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12 December 2018
PROCEEDINGS OF THE ADVANCED MATERIALS WITH HIERARCHICAL STRUCTURE FOR NEW TECHNOLOGIES AND RELIABLE STRUCTURES
1–5 October 2018
Tomsk, Russia
Research Article|
December 12 2018
Analysis of the dislocations and grain boundaries interaction in copper depending on the misorientation and boundary type
Roman P. Davlyatshin;
Roman P. Davlyatshin
a)
Perm National Research Polytechnic University
, Perm, 614990 Russia
a)Corresponding author: [email protected]
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Pavel S. Volegov
Pavel S. Volegov
b)
Perm National Research Polytechnic University
, Perm, 614990 Russia
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a)Corresponding author: [email protected]
AIP Conf. Proc. 2051, 020060 (2018)
Citation
Roman P. Davlyatshin, Pavel S. Volegov; Analysis of the dislocations and grain boundaries interaction in copper depending on the misorientation and boundary type. AIP Conf. Proc. 12 December 2018; 2051 (1): 020060. https://doi.org/10.1063/1.5083303
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