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Atomic processes of shear-coupled migration in {112} twins and vicinal grain boundaries in bcc-Fe

Author
Kvashin, N.; García-Müller, P.L.; Anento, N.; Serra, A.
Type of activity
Journal article
Journal
Physical review materials
Date of publication
2020-07
Volume
4
Number
7
First page
073604:1
Last page
073604:8
DOI
10.1103/PhysRevMaterials.4.073604
Project funding
Multiscale modelling for fusion and fission materials
Nanostructural processes in metals and alloys under plastic deformation and/or irradiation
Repository
http://hdl.handle.net/2117/327359 Open in new window
URL
https://journals.aps.org/prmaterials/abstract/10.1103/PhysRevMaterials.4.073604 Open in new window
Abstract
Tilt {112} grain boundaries (GBs) in bcc metals perform shear-coupled grain-boundary migration by the creation and glide of disconnections. Disconnection dipoles may be created at the pristine GB at high stresses or may be generated at the core of a GB dislocation that acts as a source of disconnections. We characterize this source in terms of its Burgers vector, denoted ¿b1/-1, and describe the mechanism that allows the source to move conservatively with the GB. The ¿b1/-1 grain-boundary disl...
Citation
Kvashin, N. [et al.]. Atomic processes of shear-coupled migration in {112} twins and vicinal grain boundaries in bcc-Fe. "Physical review materials", Juliol 2020, vol. 4, núm. 7, p. 073604:1-073604:8.
Keywords
Deformació plàstica, Dinàmica molecular, Disconexions, Dislocacions, Dislocacions de frontera, Fronteres de gra

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