Geometry of plastic deformation in metals as piecewise isometric transformations
Beygelzimer, Yan ; Filippov, Alexander and Orlov, Dmytro LU
(2024)
In Scientific Reports
14(1).
- Abstract
Deformation mechanisms of crystalline solids has been the subject of research for more than two centuries. The theory of dislocations dominates modern views but still has significant gaps demanding the introduction of additional concepts for the coherent quantitative description of physical phenomena. In this work, we propose a coherent geometric description of motion and deformation in crystalline solids as piecewise isometric transformations (PWIT). The latter only includes operations that, similar to interatomic spacing in crystalline lattice, do not alter distances between reference points, i.e. translations, rotations and mirror reflections. The difference between solid-body translations and plastic deformations is that the... (More)
Deformation mechanisms of crystalline solids has been the subject of research for more than two centuries. The theory of dislocations dominates modern views but still has significant gaps demanding the introduction of additional concepts for the coherent quantitative description of physical phenomena. In this work, we propose a coherent geometric description of motion and deformation in crystalline solids as piecewise isometric transformations (PWIT). The latter only includes operations that, similar to interatomic spacing in crystalline lattice, do not alter distances between reference points, i.e. translations, rotations and mirror reflections. The difference between solid-body translations and plastic deformations is that the isometric transformations have discontinuities that in real-life materials realise through dislocations (termination of shifts), disclinations (termination of rotations), and twins (mirror reflections). The conceptual description of plastic deformations as PWIT can be useful for the better description of physical phenomena, proposing new hypothesis, and for developing predictive analytical models. In this paper, the use of this conceptual description enables proposing new hypothesis about the nature of such interesting phenomena in severe plastic deformation as (i) stationary ‘solid state turbulence’ stage in high pressure torsion, and (ii) rate of mass transfer (mechanically assisted diffusion) in simple-shear deformation.
(Less)
- author
- Beygelzimer, Yan
; Filippov, Alexander
and Orlov, Dmytro
LU
- organization
- publishing date
- 2024-12
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Deformation mechanisms, Mechanically assisted diffusion, Piecewise isometric transformation, Plastic deformation, Severe plastic deformation
- in
- Scientific Reports
- volume
- 14
- issue
- 1
- article number
- 19119
- publisher
- Nature Publishing Group
- external identifiers
-
- scopus:85201431875
- pmid:39155314
- pmid:39155314
- ISSN
- 2045-2322
- DOI
- 10.1038/s41598-024-70077-3
- project
- Microstructure design in metallic materials using deformation processing based techniques
- Biomaterials@LU
- language
- English
- LU publication?
- yes
- id
- 19804bd9-664f-4eba-b1bf-008753c8328e
- date added to LUP
- 2024-08-21 09:34:10
- date last changed
- 2024-08-28 11:14:59
@article{19804bd9-664f-4eba-b1bf-008753c8328e,
abstract = {{<p>Deformation mechanisms of crystalline solids has been the subject of research for more than two centuries. The theory of dislocations dominates modern views but still has significant gaps demanding the introduction of additional concepts for the coherent quantitative description of physical phenomena. In this work, we propose a coherent geometric description of motion and deformation in crystalline solids as piecewise isometric transformations (PWIT). The latter only includes operations that, similar to interatomic spacing in crystalline lattice, do not alter distances between reference points, i.e. translations, rotations and mirror reflections. The difference between solid-body translations and plastic deformations is that the isometric transformations have discontinuities that in real-life materials realise through dislocations (termination of shifts), disclinations (termination of rotations), and twins (mirror reflections). The conceptual description of plastic deformations as PWIT can be useful for the better description of physical phenomena, proposing new hypothesis, and for developing predictive analytical models. In this paper, the use of this conceptual description enables proposing new hypothesis about the nature of such interesting phenomena in severe plastic deformation as (i) stationary ‘solid state turbulence’ stage in high pressure torsion, and (ii) rate of mass transfer (mechanically assisted diffusion) in simple-shear deformation.</p>}},
author = {{Beygelzimer, Yan and Filippov, Alexander and Orlov, Dmytro}},
issn = {{2045-2322}},
keywords = {{Deformation mechanisms; Mechanically assisted diffusion; Piecewise isometric transformation; Plastic deformation; Severe plastic deformation}},
language = {{eng}},
number = {{1}},
publisher = {{Nature Publishing Group}},
series = {{Scientific Reports}},
title = {{Geometry of plastic deformation in metals as piecewise isometric transformations}},
url = {{http://dx.doi.org/10.1038/s41598-024-70077-3}},
doi = {{10.1038/s41598-024-70077-3}},
volume = {{14}},
year = {{2024}},
}