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A finite element method to calculate geometrically necessary dislocation density: accounting for orientation discontinuities in polycrystals

Abstract:

Strain gradients have been used to link various microscale deformation phenomena to the mechanical response of a polycrystalline material, revealing sub-crystal deformation structures. The strain gradients are computed in terms of the orientation gradients and then converted to geometrically necessary dislocation densities, a quantity considered important to explain flow stress and strain hardening behaviour. In this study, a unique method has been developed to compute the orientation gradien...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1016/j.actamat.2022.118658

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Engineering Science
Role:
Author
ORCID:
0000-0003-4657-298X
More by this author
Role:
Author
ORCID:
0000-0003-2097-2678
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Materials
Role:
Author
ORCID:
0000-0002-1065-2411
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Role:
Author
ORCID:
0000-0003-2458-9713
More by this author
Role:
Author
ORCID:
0000-0001-8688-7973
Publisher:
Elsevier
Journal:
Acta Materialia More from this journal
Volume:
245
Article number:
118658
Publication date:
2022-12-27
Acceptance date:
2022-12-24
DOI:
EISSN:
1873-2453
ISSN:
1359-6454
Language:
English
Keywords:
Pubs id:
1318213
Local pid:
pubs:1318213
Deposit date:
2023-01-06

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