Simulation of nanostructural evolution under irradiation in Fe-9%Cr –C alloys: An object kinetic Monte Carlo study of the effect of temperature and dose-rate

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Simulation of nanostructural evolution under irradiation in Fe-9%Cr –C alloys: An object kinetic Monte Carlo study of the effect of temperature and dose-rate. / Chiapetto, Monica; Becquart, Charlotte; Malerba, Lorenzo.

In: Nuclear Materials and Energy, 06.05.2016, p. 565–570.

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@article{0fca757601484020a0149ba85bc8656a,
title = "Simulation of nanostructural evolution under irradiation in Fe-9%Cr –C alloys: An object kinetic Monte Carlo study of the effect of temperature and dose-rate",
abstract = "This work explores the effects of both temperature and dose-rate on the nanostructural evolution under irradiation of the Fe-9%Cr –C alloy, model material for high-Cr ferritic/martensitic steels. Starting from an object kinetic Monte Carlo model validated at 563 K, we investigate here the accumulation of radiation damage as a function of temperature and dose-rate, attempting to highlight its connection with low- temperature radiation-induced hardening. The results show that the defect cluster mobility becomes high enough to partially counteract the material hardening process only above ∼290 °C, while high fluxes are responsible for higher densities of defects, so that an increase of the hardening process with increasing dose-rates may be expected.",
keywords = "OKMC, martensitic alloys, Fe-Cr-C , neutron irradiation, dose-rate, irradiation temperature",
author = "Monica Chiapetto and Charlotte Becquart and Lorenzo Malerba",
note = "Score=10",
year = "2016",
month = may,
day = "6",
doi = "10.1016/j.nme.2016.04.009",
language = "English",
pages = "565–570",
journal = "Nuclear Materials and Energy",
issn = "2352-1791",
publisher = "Elsevier",

}

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TY - JOUR

T1 - Simulation of nanostructural evolution under irradiation in Fe-9%Cr –C alloys: An object kinetic Monte Carlo study of the effect of temperature and dose-rate

AU - Chiapetto, Monica

AU - Becquart, Charlotte

AU - Malerba, Lorenzo

N1 - Score=10

PY - 2016/5/6

Y1 - 2016/5/6

N2 - This work explores the effects of both temperature and dose-rate on the nanostructural evolution under irradiation of the Fe-9%Cr –C alloy, model material for high-Cr ferritic/martensitic steels. Starting from an object kinetic Monte Carlo model validated at 563 K, we investigate here the accumulation of radiation damage as a function of temperature and dose-rate, attempting to highlight its connection with low- temperature radiation-induced hardening. The results show that the defect cluster mobility becomes high enough to partially counteract the material hardening process only above ∼290 °C, while high fluxes are responsible for higher densities of defects, so that an increase of the hardening process with increasing dose-rates may be expected.

AB - This work explores the effects of both temperature and dose-rate on the nanostructural evolution under irradiation of the Fe-9%Cr –C alloy, model material for high-Cr ferritic/martensitic steels. Starting from an object kinetic Monte Carlo model validated at 563 K, we investigate here the accumulation of radiation damage as a function of temperature and dose-rate, attempting to highlight its connection with low- temperature radiation-induced hardening. The results show that the defect cluster mobility becomes high enough to partially counteract the material hardening process only above ∼290 °C, while high fluxes are responsible for higher densities of defects, so that an increase of the hardening process with increasing dose-rates may be expected.

KW - OKMC

KW - martensitic alloys

KW - Fe-Cr-C

KW - neutron irradiation

KW - dose-rate

KW - irradiation temperature

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/22488222

U2 - 10.1016/j.nme.2016.04.009

DO - 10.1016/j.nme.2016.04.009

M3 - Article

SP - 565

EP - 570

JO - Nuclear Materials and Energy

JF - Nuclear Materials and Energy

SN - 2352-1791

M1 - 9

ER -

ID: 2211536