Radiation-induced Ostwald ripening in oxide dispersion strengthened ferritic steels irradiated at high ion dose

M.-L. Lescoat 1 J. Ribis 1 Y. Chen 2 A. Marquis E. E. Bordas 3 P. Trocellier 3 Y. Serruys 3 A. Gentils 4 O. Kaitasov 5 Y. De Carlan 1 A. Legris 6
1 SRMA - Service des Recherches Métallurgiques Appliquées
DMN - Département des Matériaux pour le Nucléaire : DEN/DMN
3 SRMP - Service de recherches de métallurgie physique
DMN - Département des Matériaux pour le Nucléaire : DEN/DMN
4 CSNSM PS2
CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière
5 CSNSM SEMI
CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière
Abstract : Oxide dispersion strengthened (ODS) ferritic steels are considered promising candidates as cladding tubes for Generation IV nuclear reactors. In such reactors, irradiation damage can reach more than 150 dpa at temperatures ranging from 400 to 650 degrees C. Thus nanopartide stability has to be guaranteed in order to ensure that these materials possess excellent creep properties. Using Fe ions, ODS steels were irradiated at 500 degrees C up to 150 dpa. At this temperature the nano-oxide population evolution under irradiation is similar to that observed after annealing at high temperature. It consists of a slight increase in the particle size and a slight decrease in the density, which can be both explained by an Ostwald ripening mechanism. Conversely, irradiations performed at room temperature using Au ions lead to a complete dissolution of the oxide particles, in agreement with the estimation of ballistic vs. radiation enhanced diffusion effects. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Type de document :
Article dans une revue
Acta Materialia, Elsevier, 2014, pp.328-340. 〈10.1016/j.actamat.2014.06.060〉
Liste complète des métadonnées

http://hal.in2p3.fr/in2p3-01079105
Contributeur : Emilie Bonnardel <>
Soumis le : vendredi 31 octobre 2014 - 11:29:19
Dernière modification le : mardi 3 juillet 2018 - 11:24:05

Identifiants

Collections

Citation

M.-L. Lescoat, J. Ribis, Y. Chen, A. Marquis E., E. Bordas, et al.. Radiation-induced Ostwald ripening in oxide dispersion strengthened ferritic steels irradiated at high ion dose. Acta Materialia, Elsevier, 2014, pp.328-340. 〈10.1016/j.actamat.2014.06.060〉. 〈in2p3-01079105〉

Partager

Métriques

Consultations de la notice

164