Interaction between mobile dislocations and perfect dislocation loops in Fe-Ni-Cr austenitic alloy systems

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Interaction between mobile dislocations and perfect dislocation loops in Fe-Ni-Cr austenitic alloy systems. / Bakaev, Alexander; Terentyev, Dmitry; Grigorev, Petr; Zhurkin, Evgeni E.

In: Journal of Surface Investigation. X-ray, Synchrotron and Neutron Techniques, Vol. 9, No. 2, 15.04.2015, p. 290-299.

Research output: Contribution to journalArticle

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Bakaev, A, Terentyev, D, Grigorev, P & Zhurkin, EE 2015, 'Interaction between mobile dislocations and perfect dislocation loops in Fe-Ni-Cr austenitic alloy systems', Journal of Surface Investigation. X-ray, Synchrotron and Neutron Techniques, vol. 9, no. 2, pp. 290-299. https://doi.org/10.1134/S1027451015020056

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Bakaev, Alexander ; Terentyev, Dmitry ; Grigorev, Petr ; Zhurkin, Evgeni E. / Interaction between mobile dislocations and perfect dislocation loops in Fe-Ni-Cr austenitic alloy systems. In: Journal of Surface Investigation. X-ray, Synchrotron and Neutron Techniques. 2015 ; Vol. 9, No. 2. pp. 290-299.

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@article{664476bdfd974ab1adfbd155ba1df23a,
title = "Interaction between mobile dislocations and perfect dislocation loops in Fe-Ni-Cr austenitic alloy systems",
abstract = "The classical molecular dynamics method is employed to simulate the interaction of screw and edge dislocations with interstitial perfect dislocation loops (of 2 and 5 nm in diameter) in the austenitic model alloy Fe70Ni10Cr20 at temperatures of T = 300–900 K. Perfect loops can be created from Frank loops during the plastic deformation of irradiated austenitic steels applied in nuclear reactors. As a result, the dislocation-defect interaction mechanisms are established and classified. The loop absorption mechanisms, which are related to the formation of free channels capable of enhancing radiation-induced steel embrittlement, are revealed. The effectivenesses of loop absorption observed during their interaction with screw and edge dislocations, as well as unpinning stresses required for a dislocation to overcome the defect acting as an obstacle, are compared versus the material temperature, defect size, and interaction geometry.",
keywords = "Absorption mechanisms, Austenitic alloys, Austenitic model alloys, Classical molecular dynamics, Dislocation defects, Interaction geometries, Material temperature, Dislocation loop",
author = "Alexander Bakaev and Dmitry Terentyev and Petr Grigorev and Zhurkin, {Evgeni E.}",
note = "Score=10",
year = "2015",
month = "4",
day = "15",
doi = "10.1134/S1027451015020056",
language = "English",
volume = "9",
pages = "290--299",
journal = "Journal of Surface Investigation. X-ray, Synchrotron and Neutron Techniques",
issn = "1027-4510",
publisher = "MAIK Nauka/Interperiodica",
number = "2",

}

RIS - Download

TY - JOUR

T1 - Interaction between mobile dislocations and perfect dislocation loops in Fe-Ni-Cr austenitic alloy systems

AU - Bakaev, Alexander

AU - Terentyev, Dmitry

AU - Grigorev, Petr

AU - Zhurkin, Evgeni E.

N1 - Score=10

PY - 2015/4/15

Y1 - 2015/4/15

N2 - The classical molecular dynamics method is employed to simulate the interaction of screw and edge dislocations with interstitial perfect dislocation loops (of 2 and 5 nm in diameter) in the austenitic model alloy Fe70Ni10Cr20 at temperatures of T = 300–900 K. Perfect loops can be created from Frank loops during the plastic deformation of irradiated austenitic steels applied in nuclear reactors. As a result, the dislocation-defect interaction mechanisms are established and classified. The loop absorption mechanisms, which are related to the formation of free channels capable of enhancing radiation-induced steel embrittlement, are revealed. The effectivenesses of loop absorption observed during their interaction with screw and edge dislocations, as well as unpinning stresses required for a dislocation to overcome the defect acting as an obstacle, are compared versus the material temperature, defect size, and interaction geometry.

AB - The classical molecular dynamics method is employed to simulate the interaction of screw and edge dislocations with interstitial perfect dislocation loops (of 2 and 5 nm in diameter) in the austenitic model alloy Fe70Ni10Cr20 at temperatures of T = 300–900 K. Perfect loops can be created from Frank loops during the plastic deformation of irradiated austenitic steels applied in nuclear reactors. As a result, the dislocation-defect interaction mechanisms are established and classified. The loop absorption mechanisms, which are related to the formation of free channels capable of enhancing radiation-induced steel embrittlement, are revealed. The effectivenesses of loop absorption observed during their interaction with screw and edge dislocations, as well as unpinning stresses required for a dislocation to overcome the defect acting as an obstacle, are compared versus the material temperature, defect size, and interaction geometry.

KW - Absorption mechanisms

KW - Austenitic alloys

KW - Austenitic model alloys

KW - Classical molecular dynamics

KW - Dislocation defects

KW - Interaction geometries

KW - Material temperature

KW - Dislocation loop

UR - http://ecm.sckcen.be/OTCS/llisapi.dll?func=ll&objId=28559434&objaction=overview&tab=1

U2 - 10.1134/S1027451015020056

DO - 10.1134/S1027451015020056

M3 - Article

VL - 9

SP - 290

EP - 299

JO - Journal of Surface Investigation. X-ray, Synchrotron and Neutron Techniques

JF - Journal of Surface Investigation. X-ray, Synchrotron and Neutron Techniques

SN - 1027-4510

IS - 2

ER -

ID: 3751560