Dislocation motion around loaded notches in ice single-crystals

Daniel Cullen; Xiaohong Hu; Ian Baker; Michael Dudley

doi:10.1016/S0165-232X(00)00003-3

Dislocation motion around loaded notches in ice single-crystals

Daniel Cullen
, Xiaohong Hu
, Ian Baker
, Michael Dudley

Materials Science and Engineering

Stony Brook University

Dartmouth College

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

1 Scopus citations

Abstract

Synchrotron X-ray topography has been used to study dislocation behavior around notches in single-crystals of ice during in-situ deformation at a constant strain-rate. During deformation at -8°C a dislocation-depleted zone (DDZ) formed above the notch while a vertical array of dislocations formed below the notch. Modeling the interaction between basal plane dislocation loops and the notch stress field suggested that this DDZ arose from dislocations gliding completely through the specimen. Dislocation activity around the notch at -8°C was much greater than that observed at -40°C and -60°C. (C) 2000 Elsevier Science B.V. All rights reserved.

Original language	English
Pages (from-to)	103-117
Number of pages	15
Journal	Cold Regions Science and Technology
Volume	31
Issue number	2
DOIs	https://doi.org/10.1016/S0165-232X(00)00003-3
State	Published - Jul 2000

Keywords

Dislocation motion
Dislocation-depleted zone (DDZ)
Ice single-crystals
Notches

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10.1016/S0165-232X(00)00003-3

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title = "Dislocation motion around loaded notches in ice single-crystals",

abstract = "Synchrotron X-ray topography has been used to study dislocation behavior around notches in single-crystals of ice during in-situ deformation at a constant strain-rate. During deformation at -8°C a dislocation-depleted zone (DDZ) formed above the notch while a vertical array of dislocations formed below the notch. Modeling the interaction between basal plane dislocation loops and the notch stress field suggested that this DDZ arose from dislocations gliding completely through the specimen. Dislocation activity around the notch at -8°C was much greater than that observed at -40°C and -60°C. (C) 2000 Elsevier Science B.V. All rights reserved.",

keywords = "Dislocation motion, Dislocation-depleted zone (DDZ), Ice single-crystals, Notches",

author = "Daniel Cullen and Xiaohong Hu and Ian Baker and Michael Dudley",

year = "2000",

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language = "English",

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T1 - Dislocation motion around loaded notches in ice single-crystals

AU - Cullen, Daniel

AU - Hu, Xiaohong

AU - Baker, Ian

AU - Dudley, Michael

PY - 2000/7

Y1 - 2000/7

N2 - Synchrotron X-ray topography has been used to study dislocation behavior around notches in single-crystals of ice during in-situ deformation at a constant strain-rate. During deformation at -8°C a dislocation-depleted zone (DDZ) formed above the notch while a vertical array of dislocations formed below the notch. Modeling the interaction between basal plane dislocation loops and the notch stress field suggested that this DDZ arose from dislocations gliding completely through the specimen. Dislocation activity around the notch at -8°C was much greater than that observed at -40°C and -60°C. (C) 2000 Elsevier Science B.V. All rights reserved.

AB - Synchrotron X-ray topography has been used to study dislocation behavior around notches in single-crystals of ice during in-situ deformation at a constant strain-rate. During deformation at -8°C a dislocation-depleted zone (DDZ) formed above the notch while a vertical array of dislocations formed below the notch. Modeling the interaction between basal plane dislocation loops and the notch stress field suggested that this DDZ arose from dislocations gliding completely through the specimen. Dislocation activity around the notch at -8°C was much greater than that observed at -40°C and -60°C. (C) 2000 Elsevier Science B.V. All rights reserved.

KW - Dislocation motion

KW - Dislocation-depleted zone (DDZ)

KW - Ice single-crystals

KW - Notches

UR - https://www.scopus.com/pages/publications/0034232671

U2 - 10.1016/S0165-232X(00)00003-3

DO - 10.1016/S0165-232X(00)00003-3

M3 - Article

SN - 0165-232X

VL - 31

SP - 103

EP - 117

JO - Cold Regions Science and Technology

JF - Cold Regions Science and Technology

IS - 2

ER -

Dislocation motion around loaded notches in ice single-crystals

Abstract

Keywords

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