Deformation of Ice Single Crystals Close to the Melting Point
Abstract Constant strain-rate compression tests on ice single crystals at temperatures between –20°C and -0.2°C are described. The power-law dependence of yield stress on strain-rate gives a value of n which varies from 1.95±0.04 at –0.2°C to 2.07±0.08 at –20°C. The activation energy of deformation...
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Language: | English |
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Cambridge University Press (CUP)
1978
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Online Access: | http://dx.doi.org/10.1017/s0022143000033608 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000033608 |
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crcambridgeupr:10.1017/s0022143000033608 2024-09-15T18:15:38+00:00 Deformation of Ice Single Crystals Close to the Melting Point Jones, Stephen J. Brunet, Jean-Guy 1978 http://dx.doi.org/10.1017/s0022143000033608 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000033608 en eng Cambridge University Press (CUP) Journal of Glaciology volume 21, issue 85, page 445-455 ISSN 0022-1430 1727-5652 journal-article 1978 crcambridgeupr https://doi.org/10.1017/s0022143000033608 2024-07-24T04:03:22Z Abstract Constant strain-rate compression tests on ice single crystals at temperatures between –20°C and -0.2°C are described. The power-law dependence of yield stress on strain-rate gives a value of n which varies from 1.95±0.04 at –0.2°C to 2.07±0.08 at –20°C. The activation energy of deformation varies with strain-rate, but a mean value of 70±2 kJ mol –1 is obtained, with no indication of any increase close to maleting point,as has been found polycrystalline ice. An apparent work-hardening effect, at strains greater than 15%, is explained as being due to bending of the crystal changing the orientation of the basal planes. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 21 85 445 455 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Abstract Constant strain-rate compression tests on ice single crystals at temperatures between –20°C and -0.2°C are described. The power-law dependence of yield stress on strain-rate gives a value of n which varies from 1.95±0.04 at –0.2°C to 2.07±0.08 at –20°C. The activation energy of deformation varies with strain-rate, but a mean value of 70±2 kJ mol –1 is obtained, with no indication of any increase close to maleting point,as has been found polycrystalline ice. An apparent work-hardening effect, at strains greater than 15%, is explained as being due to bending of the crystal changing the orientation of the basal planes. |
format |
Article in Journal/Newspaper |
author |
Jones, Stephen J. Brunet, Jean-Guy |
spellingShingle |
Jones, Stephen J. Brunet, Jean-Guy Deformation of Ice Single Crystals Close to the Melting Point |
author_facet |
Jones, Stephen J. Brunet, Jean-Guy |
author_sort |
Jones, Stephen J. |
title |
Deformation of Ice Single Crystals Close to the Melting Point |
title_short |
Deformation of Ice Single Crystals Close to the Melting Point |
title_full |
Deformation of Ice Single Crystals Close to the Melting Point |
title_fullStr |
Deformation of Ice Single Crystals Close to the Melting Point |
title_full_unstemmed |
Deformation of Ice Single Crystals Close to the Melting Point |
title_sort |
deformation of ice single crystals close to the melting point |
publisher |
Cambridge University Press (CUP) |
publishDate |
1978 |
url |
http://dx.doi.org/10.1017/s0022143000033608 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000033608 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 21, issue 85, page 445-455 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000033608 |
container_title |
Journal of Glaciology |
container_volume |
21 |
container_issue |
85 |
container_start_page |
445 |
op_container_end_page |
455 |
_version_ |
1810453499554562048 |