s'authentifier
version française rss feed
HAL : in2p3-00658301, version 1

Fiche détaillée  Récupérer au format
Journal of Nuclear Materials 428 (2011) 176-182
In-situ TEM study of the stability of nano-oxides in ODS steels under ion-irradiation
M.-L. Lescoat1, J. Ribis1, A. Gentils2, O. Kaïtasov2, Y. De Carlan1, A. Legris3
(2011)

Oxide Dispersion Strengthened (ODS) ferritic-martensitic steels are considered for nuclear applications as structural components for fusion or fission reactors. To ensure good performances in service, the stability under irradiation of the microstructure and especially of Y-Ti-O nanoclusters have to be assessed. In-situ Transmission Electron Microscopy has been performed to follow the Y-Ti-O nano-oxides dispersed in a Fe18Cr1W0.3Ti + 0.6Y2O3 ODS material under ion-irradiation at 500°C. Microstructural examinations using bright and dark field mode showed that Y-Ti-O nano-precipitates (5 nm) are still present after irradiation up to 45 dpa. However, some larger oxides seem to be more affected by irradiation at 45 dpa (creation of point defects, interface and shape modification).
1 :  SRMA - Service des Recherches Métallurgiques Appliquées
2 :  CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse
3 :  UMET - Unité Matériaux et Transformations
CSNSM PS2
CSNSM SEMI
Physique/Matière Condensée/Science des matériaux

Sciences de l'ingénieur/Matériaux
DISPERSION-STRENGTHENED STEEL – FERRITIC ALLOYS – HIGH-TEMPERATURE – PARTICLES – NANOCLUSTERS