Browsing by Author "Kvashin, Nikolai"
Now showing items 1-10 of 10
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{111} tilt grain boundaries as barriers for slip transfer in bcc Fe
(2022-02)
Article
Restricted access - publisher's policyWe have studied the interaction of an individual dislocation and a pile-up of dislocations with {111} tilt grain boundary in iron by means of atomistic simulations. The {111} tilt grain boundary, under externally applied ... -
Atomic processes of shear-coupled migration in {112} twins and vicinal grain boundaries in bcc-Fe
(American Physical Society (APS), 2020-07)
Article
Open AccessTilt {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 ... -
Atomic-level study on the interaction of plastic slip with S3{112} tilt grain boundary and {112} twins in bcc metals
(American Physical Society (APS), 2022-03)
Article
Open AccessThe Σ3{112} tilt grain boundary (GB) is found in many grains in bcc polycrystalline metals due to its low energy and high stability. Moreover, it is the coherent boundary of the {112} twin. This paper studies the interaction ... -
Atomistic study of slip transfer in BCC metals
(Universitat Politècnica de Catalunya, 2022-11-16)
Doctoral thesis
Open Access(English) The mechanical properties of structural materials, which are naturally polycrystalline, is defined by a number of physical processes that take place at different time and space scales. On several of those processes, ... -
Disconnection-mediated motion of ⟨110⟩ tilt grain boundaries in a-Fe
(American Physical Society (APS), 2022-05)
Article
Open AccessIt is possible for ⟨110⟩ tilt grain boundaries (GBs) in bcc metals to perform a conservative displacement by the glide of intrinsic GB line defects, namely, disconnections. The paper presents the characteristic of these ... -
Effect of irradiation defects on the plastic slip of {112} grain boundary: atomic scale study
(2022-11)
Article
Restricted access - publisher's policyS3{112} grain boundary (GB) is known to exhibit plastic slip in bcc metals, which overall contributes to the good ductility and toughness of such metals as iron, matrix element for the steels applied in nuclear industry. ... -
Interaction of a dislocation pileup with {332} tilt grain boundary in bcc metals studied by MD simulations
(American Physical Society (APS), 2021-01)
Article
Open AccessThe sustainability and capacity of macroscopic deformation by polycrystalline metals and metallic alloys is controlled by the propagation of dislocation-mediated slip through grains. In this paper, the interaction of a ... -
Multiscale modelling for fusion and fission materials: the M4F project
(Elsevier, 2021-12)
Article
Open AccessThe M4F project brings together the fusion and fission materials communities working on the prediction of radiation damage production and evolution and their effects on the mechanical behaviour of irradiated ferritic/martensitic ... -
On the common topological conditions for shear-coupled twin boundary migration in bcc and hcp metals
(Institute for Metals Superplasticity Problems, 2020-11)
Article
Open AccessThe most abundant deformation twins in metals with hcp and bcc crystallographic structures, i. e. (10-12) and (112) respectively, proceed with the same mechanism of deformation under an applied shear stress, i. e. shear-coupled ... -
On the migration of {3 3 2} <1 1 0> tilt grain boundary in bcc metals and further nucleation of {1 1 2} twin
(2021-08)
Article
Open Access{3 3 2} <1 1 0> tilt grain boundaries (GB) move conservatively under a shear stress by the creation and glide of disconnections. When crystal dislocations interact with the GB they are absorbed and transformed into GB ...
