Characterization of dislocation loops and chromium-rich precipitates in ferritic iron-chromium alloys as means of void swelling suppression

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Characterization of dislocation loops and chromium-rich precipitates in ferritic iron-chromium alloys as means of void swelling suppression. / Terentyev, Dmitry; Olsson, Pär; Malerba, Lorenzo; Barashev, Alexander V.; Bonny, Giovanni (Peer reviewer).

In: Journal of Nuclear Materials, Vol. 362, No. 2-3, 31.05.2007, p. 167-173.

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@article{99f383ea38e84956b58e934e9e374956,
title = "Characterization of dislocation loops and chromium-rich precipitates in ferritic iron-chromium alloys as means of void swelling suppression",
abstract = "We have used both ab initio and empirical potential based molecular dynamics and static calculations to parameterize a model accounting for the mobility of self-interstitial clusters and small dislocation loops in Fe-Cr alloys depending on Cr content. Particularly, we have considered the interval of 5-15{\%} of Cr, corresponding to the typical concentration of Cr in ferritic/martensitic steels. The mobility of self-interstitial clusters and small dislocation loops was found to be strongly reduced in the presence of Cr due to attractive interaction between self-interstitials and Cr atoms, whereas Cr-rich precipitates act as repulsive obstacles. The results obtained allow the experimental trend of swelling measurements in neutron and high-energy electron irradiated Fe-Cr alloys to be interpreted and explained.",
keywords = "ferritic alloys, swelling, precipitates, dislocation loop, multiscale modelling",
author = "Dmitry Terentyev and P{\"a}r Olsson and Lorenzo Malerba and Barashev, {Alexander V.} and Giovanni Bonny",
note = "Score = 10",
year = "2007",
month = "5",
day = "31",
doi = "10.1016/j.jnucmat.2007.01.069",
language = "English",
volume = "362",
pages = "167--173",
journal = "Journal of Nuclear Materials",
issn = "0022-3115",
publisher = "Elsevier",
number = "2-3",

}

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TY - JOUR

T1 - Characterization of dislocation loops and chromium-rich precipitates in ferritic iron-chromium alloys as means of void swelling suppression

AU - Terentyev, Dmitry

AU - Olsson, Pär

AU - Malerba, Lorenzo

AU - Barashev, Alexander V.

A2 - Bonny, Giovanni

N1 - Score = 10

PY - 2007/5/31

Y1 - 2007/5/31

N2 - We have used both ab initio and empirical potential based molecular dynamics and static calculations to parameterize a model accounting for the mobility of self-interstitial clusters and small dislocation loops in Fe-Cr alloys depending on Cr content. Particularly, we have considered the interval of 5-15% of Cr, corresponding to the typical concentration of Cr in ferritic/martensitic steels. The mobility of self-interstitial clusters and small dislocation loops was found to be strongly reduced in the presence of Cr due to attractive interaction between self-interstitials and Cr atoms, whereas Cr-rich precipitates act as repulsive obstacles. The results obtained allow the experimental trend of swelling measurements in neutron and high-energy electron irradiated Fe-Cr alloys to be interpreted and explained.

AB - We have used both ab initio and empirical potential based molecular dynamics and static calculations to parameterize a model accounting for the mobility of self-interstitial clusters and small dislocation loops in Fe-Cr alloys depending on Cr content. Particularly, we have considered the interval of 5-15% of Cr, corresponding to the typical concentration of Cr in ferritic/martensitic steels. The mobility of self-interstitial clusters and small dislocation loops was found to be strongly reduced in the presence of Cr due to attractive interaction between self-interstitials and Cr atoms, whereas Cr-rich precipitates act as repulsive obstacles. The results obtained allow the experimental trend of swelling measurements in neutron and high-energy electron irradiated Fe-Cr alloys to be interpreted and explained.

KW - ferritic alloys

KW - swelling

KW - precipitates

KW - dislocation loop

KW - multiscale modelling

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_81602

UR - http://knowledgecentre.sckcen.be/so2/bibref/4322

U2 - 10.1016/j.jnucmat.2007.01.069

DO - 10.1016/j.jnucmat.2007.01.069

M3 - Article

VL - 362

SP - 167

EP - 173

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

IS - 2-3

ER -

ID: 381824