Cross-slip and annihilation of screw dislocations in Cu: A molecular dynamics study

Dan Mordehai; I. Kelson; Guy Makov

doi:10.1016/j.msea.2005.03.077

Cross-slip and annihilation of screw dislocations in Cu: A molecular dynamics study

Dan Mordehai, I. Kelson, Guy Makov

Department of Materials Engineering

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

17 Scopus citations

Abstract

Cross-slip of screw dislocations and the annihilation of screw dislocation dipoles in Cu were simulated using constant-temperature constant-stress molecular dynamics. The cross-slip mechanism and annihilation process of flexible dislocations in a large dipole configuration was identified as a dynamic variant of the Friedel-Escaig mechanism. The cross-slip rate was found to exhibit exponential dependence on the temperature, from which the activation enthalpy for the cross-slip process was calculated by the Arrhenius relation.

Original language	English
Pages (from-to)	37-39
Number of pages	3
Journal	Materials Science and Engineering: A
Volume	400-401
Issue number	1-2 SUPPL.
DOIs	https://doi.org/10.1016/j.msea.2005.03.077
State	Published - 25 Jul 2005

Keywords

Cross-slip
Dislocations
Molecular dynamics

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.msea.2005.03.077

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title = "Cross-slip and annihilation of screw dislocations in Cu: A molecular dynamics study",

abstract = "Cross-slip of screw dislocations and the annihilation of screw dislocation dipoles in Cu were simulated using constant-temperature constant-stress molecular dynamics. The cross-slip mechanism and annihilation process of flexible dislocations in a large dipole configuration was identified as a dynamic variant of the Friedel-Escaig mechanism. The cross-slip rate was found to exhibit exponential dependence on the temperature, from which the activation enthalpy for the cross-slip process was calculated by the Arrhenius relation.",

keywords = "Cross-slip, Dislocations, Molecular dynamics",

author = "Dan Mordehai and I. Kelson and Guy Makov",

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doi = "10.1016/j.msea.2005.03.077",

language = "English",

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journal = "Materials Science and Engineering: A",

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T1 - Cross-slip and annihilation of screw dislocations in Cu

T2 - A molecular dynamics study

AU - Mordehai, Dan

AU - Kelson, I.

AU - Makov, Guy

PY - 2005/7/25

Y1 - 2005/7/25

N2 - Cross-slip of screw dislocations and the annihilation of screw dislocation dipoles in Cu were simulated using constant-temperature constant-stress molecular dynamics. The cross-slip mechanism and annihilation process of flexible dislocations in a large dipole configuration was identified as a dynamic variant of the Friedel-Escaig mechanism. The cross-slip rate was found to exhibit exponential dependence on the temperature, from which the activation enthalpy for the cross-slip process was calculated by the Arrhenius relation.

AB - Cross-slip of screw dislocations and the annihilation of screw dislocation dipoles in Cu were simulated using constant-temperature constant-stress molecular dynamics. The cross-slip mechanism and annihilation process of flexible dislocations in a large dipole configuration was identified as a dynamic variant of the Friedel-Escaig mechanism. The cross-slip rate was found to exhibit exponential dependence on the temperature, from which the activation enthalpy for the cross-slip process was calculated by the Arrhenius relation.

KW - Cross-slip

KW - Dislocations

KW - Molecular dynamics

UR - http://www.scopus.com/inward/record.url?scp=21644485649&partnerID=8YFLogxK

U2 - 10.1016/j.msea.2005.03.077

DO - 10.1016/j.msea.2005.03.077

M3 - Article

AN - SCOPUS:21644485649

SN - 0921-5093

VL - 400-401

SP - 37

EP - 39

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

IS - 1-2 SUPPL.

ER -

Cross-slip and annihilation of screw dislocations in Cu: A molecular dynamics study

Abstract

Keywords

ASJC Scopus subject areas

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