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- Title
Comprehensive Analysis of Nanostructure of Oxide Dispersion Strengthened Steels as Prospective Materials for Nuclear Reactors.
- Authors
Rogozhkin, S. V.; Khomich, A. A.; Bogachev, A. A.; Nikitin, A. A.; Lukyanchuk, A. A.; Raznitsyn, O. A.; Shutov, A. S.; Vasiliev, A. L.; Presniakov, M. Yu.
- Abstract
The enhanced mechanical properties of oxide dispersion-strengthened (ODS) steels are mainly due to the high density of homogeneously distributed oxide inclusions. It is well known that some alloying elements, such as Ti, V, and Al, play an important role in the formation of oxides/nanoclusters and influence the density and size of these inclusions. In this paper, a wide range of ODS steels containing different alloying elements were studied. The microstructural analysis was performed using transmission electron microscopy and atom probe tomography. Different types of inclusions were found in the steels: oxides of the Y–Ti–O or Y–Al–O types with sizes of ~2–15 nm, and nanoclusters (2–5 nm) enriched in Y, O, and Cr, as well as Ti, V, and Al, when these elements were present in the material. It was shown that oxides made the main contribution to the steel strengthening, while the cluster contribution was comparable with that of oxides only in Austenitic ODS and 14Cr ODS steels.
- Subjects
STEEL walls; NUCLEAR reactor materials; DISPERSION strengthening; ATOM-probe tomography; TRANSMISSION electron microscopy; STEEL; ZIRCALOY-2
- Publication
Physics of Atomic Nuclei, 2020, Vol 83, Issue 10, p1425
- ISSN
1063-7788
- Publication type
Article
- DOI
10.1134/S1063778820100191