Study of Nanostructure of Ferritic-Martensitic Steel ChS-139 in Initial State and after Fe Ion Irradiation
| Autor: | E. M. Mozhanov, N. A. Iskandarov, Timur Kulevoy, A. A. Nikitin, M. V. Leontyeva-Smirnova, R. P. Kuibeda, A. S. Shutov, A. A. Lukyanchuk, Stanislav L. Andrianov, S. V. Rogozhkin, O. A. Raznitsyn, A. G. Zaluzhnyi, A. A. Nikitina |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science General Engineering Analytical chemistry Niobium Vanadium chemistry.chemical_element 02 engineering and technology Atom probe 021001 nanoscience & nanotechnology 01 natural sciences law.invention Carbide Chromium Cottrell atmosphere chemistry law 0103 physical sciences General Materials Science Irradiation Tempering 0210 nano-technology |
| Zdroj: | Inorganic Materials: Applied Research. 9:231-238 |
| ISSN: | 2075-115X 2075-1133 |
| DOI: | 10.1134/s2075113318020247 |
| Popis: | The chemical element distributions and the fine structure were studied using atom probe tomography in ChS-139 steel (Fe–12Cr–Nb–Mo–W–V–N–B) after conventional heat treatment (normalizing at 1190°C for 25 s and subsequent tempering at 720°C for 2 h) and after subsequent Fe ion irradiation at room temperature up to the damage doses of 8 and 16 displacements per atom (dpa). A large number of nanosized clusters (~1023 m−3) enriched in chromium, vanadium, nitrogen, and niobium were found throughout the Ch-139 steel after conventional heat treatment. The chemical element distribution in the M23C6 carbide, Nb2(C, N) and M6(C, N) carbonitride phases, pre-precipitates of M6X carbide phases, and the Cottrell atmosphere were studied. The changes in the cluster composition and sizes resulting from irradiation at room temperature were found. An increase in the cluster sizes upon irradiation was accompanied by a reduction in the concentrations of chromium, vanadium, nitrogen, and niobium. |
| Databáze: | OpenAIRE |
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