Strain gradients and geometrically necessary dislocations in deformed ice single crystals

Hard X-ray diffraction experiments were performed on ice single crystals deformed in torsion. This work shows the relationship between the density of geometrically necessary dislocations and strain gradients. The torsion strain appears to be totally accommodated by geometrically necessary basal scre...

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Bibliographic Details
Published in:Scripta materialia 2003-09, Vol.49 (5), p.411-415
Main Authors: Montagnat, Maurine, Duval, Paul, Bastie, Pierre, Hamelin, Bernard
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Deformation and plasticity (including yield, ductility, and superplasticity)
Dislocation structure
Exact sciences and technology
Ice
Mechanical and acoustical properties of condensed matter
Mechanical properties of solids
Physics
Strain-gradient plasticity
X-ray diffraction
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Summary:Hard X-ray diffraction experiments were performed on ice single crystals deformed in torsion. This work shows the relationship between the density of geometrically necessary dislocations and strain gradients. The torsion strain appears to be totally accommodated by geometrically necessary basal screw dislocations.
ISSN:1359-6462
1872-8456
DOI:10.1016/S1359-6462(03)00303-8