Annealing as a Technique for Estimating the Structural Elements Contribution to NPP Materials Service Properties
- Авторы: Kuleshova E.1,2, Fedotov I.1
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Учреждения:
- Kurchatov Institute, National Research Center
- Moscow Institute of Engineering Physics, National Research Nuclear University
- Выпуск: Том 120, № 8 (2019)
- Страницы: 763-769
- Раздел: Structure, Phase Transformations, and Diffusion
- URL: https://journals.rcsi.science/0031-918X/article/view/168631
- DOI: https://doi.org/10.1134/S0031918X19080106
- ID: 168631
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Аннотация
The annealing technique is used to estimate the effect of radiation-induced structural elements on the service properties of the materials used in nuclear power plants: reactor pressure vessel (RPV) and in-vessel internals steels. The WWER-1000 RPV weld seam is affected by a hardening mechanism, the contribution of which is 60–65%, and a nonhardening mechanism resulting in grain-boundary segregation, the contribution of which is 30–35%. Radiation defects 40–45% and G-phase precipitates 35–40% are mainly responsible for the radiation-induced hardening of WWER-1000 internals materials. Radiation-induced structural changes should be eliminated for these materials to be reused.
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Об авторах
E. Kuleshova
Kurchatov Institute, National Research Center; Moscow Institute of Engineering Physics, National Research Nuclear University
Автор, ответственный за переписку.
Email: evgenia-orm@yandex.ru
Россия, Moscow, 123182; Moscow, 115409
I. Fedotov
Kurchatov Institute, National Research Center
Email: evgenia-orm@yandex.ru
Россия, Moscow, 123182