High resolution Transmission Electron Microscopy characterization of a milled oxide dispersion strengthened steel powder

Oxide Dispersion Strengthened (ODS) steels are promising materials for generation IV fuel claddings as their dense nano-oxide dispersion provides good creep and irradiation resistance. Even if they have been studied for years, the formation mechanism of these nano-oxides is still unclear. Here we re...

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Bibliographic Details
Published in:Journal of nuclear materials 2016-10, Vol.479, p.76-84
Main Authors: Loyer-Prost, M., Merot, J.-S., Ribis, J., Le Bouar, Y., Chaffron, L., Legendre, F.
Format: Article
Language:English
Subjects:
Ball-milling
Engineering Sciences
Materials
Nanostructured materials
ODS ferritic steel
Powder characterization
Transmission Electron Microscopy
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Summary:Oxide Dispersion Strengthened (ODS) steels are promising materials for generation IV fuel claddings as their dense nano-oxide dispersion provides good creep and irradiation resistance. Even if they have been studied for years, the formation mechanism of these nano-oxides is still unclear. Here we report for the first time a High Resolution Transmission Electron Microscopy and Energy Filtered Transmission Electron Microscopy characterization of an ODS milled powder. It provides clear evidence of the presence of small crystalline nanoclusters (NCs) enriched in titanium directly after milling. Small NCs (
ISSN:0022-3115
1873-4820
DOI:10.1016/j.jnucmat.2016.06.050