Steady-State Preferred Orientation of Ice Deformed in Plane Strain at –1°C
Abstract Specimens of polycrystalline ice were experimentally deformed in plane strain at a temperature of –1°C, under a constant load and with shortening strains varying from 2 to 27%. The random c -axis orientation of the initial ice aggregates changes continuously with increasing strain towards a...
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Language: | English |
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Cambridge University Press (CUP)
1982
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Online Access: | http://dx.doi.org/10.1017/s0022143000011850 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000011850 |
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crcambridgeupr:10.1017/s0022143000011850 2024-09-30T14:37:51+00:00 Steady-State Preferred Orientation of Ice Deformed in Plane Strain at –1°C Wilson, C. J. L. Russell-Head, D. S. 1982 http://dx.doi.org/10.1017/s0022143000011850 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000011850 en eng Cambridge University Press (CUP) Journal of Glaciology volume 28, issue 98, page 145-160 ISSN 0022-1430 1727-5652 journal-article 1982 crcambridgeupr https://doi.org/10.1017/s0022143000011850 2024-09-18T04:03:42Z Abstract Specimens of polycrystalline ice were experimentally deformed in plane strain at a temperature of –1°C, under a constant load and with shortening strains varying from 2 to 27%. The random c -axis orientation of the initial ice aggregates changes continuously with increasing strain towards a steady-state, small-circle containing two maxima lying about the shortening direction. The ice microstructure is sequentially transformed from undeformed grains to smaller, irregular, deformed grains containing recrystallized grains. Grain growth then occurs forming a coarse interlocking-grain aggregate. These microstructural changes are attributed to solid-state processes occurring during deformation. The previously deformed specimens were then annealed without a load at –1°C. Annealing resulted in a substantial grain-size coarsening. However, no c -axis preferred-orientation difference developed between annealed and unannealed samples. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 28 98 145 160 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract Specimens of polycrystalline ice were experimentally deformed in plane strain at a temperature of –1°C, under a constant load and with shortening strains varying from 2 to 27%. The random c -axis orientation of the initial ice aggregates changes continuously with increasing strain towards a steady-state, small-circle containing two maxima lying about the shortening direction. The ice microstructure is sequentially transformed from undeformed grains to smaller, irregular, deformed grains containing recrystallized grains. Grain growth then occurs forming a coarse interlocking-grain aggregate. These microstructural changes are attributed to solid-state processes occurring during deformation. The previously deformed specimens were then annealed without a load at –1°C. Annealing resulted in a substantial grain-size coarsening. However, no c -axis preferred-orientation difference developed between annealed and unannealed samples. |
format |
Article in Journal/Newspaper |
author |
Wilson, C. J. L. Russell-Head, D. S. |
spellingShingle |
Wilson, C. J. L. Russell-Head, D. S. Steady-State Preferred Orientation of Ice Deformed in Plane Strain at –1°C |
author_facet |
Wilson, C. J. L. Russell-Head, D. S. |
author_sort |
Wilson, C. J. L. |
title |
Steady-State Preferred Orientation of Ice Deformed in Plane Strain at –1°C |
title_short |
Steady-State Preferred Orientation of Ice Deformed in Plane Strain at –1°C |
title_full |
Steady-State Preferred Orientation of Ice Deformed in Plane Strain at –1°C |
title_fullStr |
Steady-State Preferred Orientation of Ice Deformed in Plane Strain at –1°C |
title_full_unstemmed |
Steady-State Preferred Orientation of Ice Deformed in Plane Strain at –1°C |
title_sort |
steady-state preferred orientation of ice deformed in plane strain at –1°c |
publisher |
Cambridge University Press (CUP) |
publishDate |
1982 |
url |
http://dx.doi.org/10.1017/s0022143000011850 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000011850 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 28, issue 98, page 145-160 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000011850 |
container_title |
Journal of Glaciology |
container_volume |
28 |
container_issue |
98 |
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145 |
op_container_end_page |
160 |
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1811640631850696704 |