Comprehensive Analysis of Nanostructure of Oxide Dispersion Strengthened Steels as Prospective Materials for Nuclear Reactors
| Autor: | A. A. Lukyanchuk, A. S. Shutov, O. A. Raznitsyn, S. V. Rogozhkin, M. Yu. Presniakov, A. A. Bogachev, A. L. Vasiliev, A. A. Nikitin, A. A. Khomich |
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| Rok vydání: | 2020 |
| Předmět: |
Austenite
Physics Nuclear and High Energy Physics Nanostructure 010308 nuclear & particles physics Metallurgy Oxide Atom probe 01 natural sciences Atomic and Molecular Physics and Optics law.invention Nanoclusters chemistry.chemical_compound chemistry law Transmission electron microscopy 0103 physical sciences Cluster (physics) 010306 general physics Dispersion (chemistry) |
| Zdroj: | Physics of Atomic Nuclei. 83:1425-1433 |
| ISSN: | 1562-692X 1063-7788 |
| DOI: | 10.1134/s1063778820100191 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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