Novel processes of dislocation multiplication observed in ice

C. Shearwood; R. W. Whitworth

doi:10.1016/0956-7151(93)90352-S

Novel processes of dislocation multiplication observed in ice

Research output: Contribution to journal › Article › peer-review

Abstract

The processes by which dislocations in macroscopic-sized crystals of ice multiply under an applied stress have been revealed by synchrotron X-radiation topography. This paper describes two examples in which edge dislocation segments gliding rapidly on non-basal planes generate fresh dislocations on the basal primary slip system. The interpretation is based largely on the principles of cross-glide and the Frank-Read source, but in addition a new mechanism is proposed. This involves the cross-glide of a dislocation that is moving intermittently, and it could in principle apply to materials other than ice.

Original language	English
Pages (from-to)	205-210
Number of pages	6
Journal	Acta Metallurgica Et Materialia
Volume	41
Issue number	1
DOIs	https://doi.org/10.1016/0956-7151(93)90352-S
Publication status	Published - Jan 1993

Bibliographical note

Funding Information:
Acknowledgements--This work was supported by a research grant from the Science and Engineering Research Council, and we acknowledge the use of the synchrotron radiation facilities at the SERC Daresbury Laboratory.

Funding

Acknowledgements--This work was supported by a research grant from the Science and Engineering Research Council, and we acknowledge the use of the synchrotron radiation facilities at the SERC Daresbury Laboratory.

ASJC Scopus subject areas

General Engineering

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10.1016/0956-7151(93)90352-S

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Novel processes of dislocation multiplication observed in ice

Abstract

Bibliographical note

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ASJC Scopus subject areas

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