Formation of stable sessile interstitial complexes in reactions between glissile dislocation loops in bcc Fe

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Formation of stable sessile interstitial complexes in reactions between glissile dislocation loops in bcc Fe. / Terentyev, Dmitry; Malerba, Lorenzo; Klaver, Peter; Olsson, Pär; Bonny, Giovanni (Peer reviewer).

In: Journal of Nuclear Materials, Vol. 382, No. 2-3, 11.2008, p. 126-133.

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Terentyev, Dmitry ; Malerba, Lorenzo ; Klaver, Peter ; Olsson, Pär ; Bonny, Giovanni. / Formation of stable sessile interstitial complexes in reactions between glissile dislocation loops in bcc Fe. In: Journal of Nuclear Materials. 2008 ; Vol. 382, No. 2-3. pp. 126-133.

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@article{2da49c264b7840f8b10515385ee2273a,
title = "Formation of stable sessile interstitial complexes in reactions between glissile dislocation loops in bcc Fe",
abstract = "Clusters of self-interstitial atoms can be formed directly in high-energy displacement cascades or by growth. The majority are glissile dislocation loops and migrate by fast one-dimensional glide. We present results of a molecular dynamics (MD) study of reactions involving glissile interstitial loops in bcc-iron. We demonstrate that the reactions can produce a number of specific, stable microstructural features. Reactions between the most common glissile clusters of crowdions result in coarsening or formation of immobile interstitial complexes. Coarsening leads to a decrease of the total dislocation-line length and therefore is favourable. The structure and stability of the formed junction has been studied. No evidence of the formation of a loop from two glissile clusters was found. The formed immobile interstitial complexes have, however, high binding-energies (tens of eV), implying a relatively long lifetime. So, such objects are expected to contribute to the microstructure evolution under irradiation.",
keywords = "self-interstitial clusters, molecular dynamics",
author = "Dmitry Terentyev and Lorenzo Malerba and Peter Klaver and P{\"a}r Olsson and Giovanni Bonny",
note = "Score = 10",
year = "2008",
month = "11",
doi = "10.1016/j.jnucmat.2008.08.031",
language = "English",
volume = "382",
pages = "126--133",
journal = "Journal of Nuclear Materials",
issn = "0022-3115",
publisher = "Elsevier",
number = "2-3",

}

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TY - JOUR

T1 - Formation of stable sessile interstitial complexes in reactions between glissile dislocation loops in bcc Fe

AU - Terentyev, Dmitry

AU - Malerba, Lorenzo

AU - Klaver, Peter

AU - Olsson, Pär

A2 - Bonny, Giovanni

N1 - Score = 10

PY - 2008/11

Y1 - 2008/11

N2 - Clusters of self-interstitial atoms can be formed directly in high-energy displacement cascades or by growth. The majority are glissile dislocation loops and migrate by fast one-dimensional glide. We present results of a molecular dynamics (MD) study of reactions involving glissile interstitial loops in bcc-iron. We demonstrate that the reactions can produce a number of specific, stable microstructural features. Reactions between the most common glissile clusters of crowdions result in coarsening or formation of immobile interstitial complexes. Coarsening leads to a decrease of the total dislocation-line length and therefore is favourable. The structure and stability of the formed junction has been studied. No evidence of the formation of a loop from two glissile clusters was found. The formed immobile interstitial complexes have, however, high binding-energies (tens of eV), implying a relatively long lifetime. So, such objects are expected to contribute to the microstructure evolution under irradiation.

AB - Clusters of self-interstitial atoms can be formed directly in high-energy displacement cascades or by growth. The majority are glissile dislocation loops and migrate by fast one-dimensional glide. We present results of a molecular dynamics (MD) study of reactions involving glissile interstitial loops in bcc-iron. We demonstrate that the reactions can produce a number of specific, stable microstructural features. Reactions between the most common glissile clusters of crowdions result in coarsening or formation of immobile interstitial complexes. Coarsening leads to a decrease of the total dislocation-line length and therefore is favourable. The structure and stability of the formed junction has been studied. No evidence of the formation of a loop from two glissile clusters was found. The formed immobile interstitial complexes have, however, high binding-energies (tens of eV), implying a relatively long lifetime. So, such objects are expected to contribute to the microstructure evolution under irradiation.

KW - self-interstitial clusters

KW - molecular dynamics

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_92563

UR - http://knowledgecentre.sckcen.be/so2/bibref/5303

U2 - 10.1016/j.jnucmat.2008.08.031

DO - 10.1016/j.jnucmat.2008.08.031

M3 - Article

VL - 382

SP - 126

EP - 133

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

IS - 2-3

ER -

ID: 296951