Effect of the Neutron Irradiation Characteristics on the Irradiation-Induced Swelling in a Kh18N9 Steel
- Авторы: Kozlov A.1, Asiptsov O.1, Portnykh I.1
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Учреждения:
- Institute of Nuclear Materials
- Выпуск: Том 2019, № 7 (2019)
- Страницы: 716-720
- Раздел: Article
- URL: https://journals.rcsi.science/0036-0295/article/view/173361
- DOI: https://doi.org/10.1134/S0036029519070085
- ID: 173361
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Аннотация
Abstract—The swelling of Kh18N9 steel fragments cut from the reactor internals after irradiation at 370–442°C and an atomic displacement generation rate of 4.8 × 10–9–4.16 × 10–8 dpa/s are determined by hydrostatic weighing. The vacancy migration energy for a Kh18N9 steel (1.24 eV) is estimated using the energies for austenitic steels (ChS68, EK164) with various nickel contents. The neutron irradiation-induced void growth in a Kh18N9 steel during its operation in the BN-600 nuclear power reactor internals is analyzed in terms of a point defect migration model with allowance for the estimated vacancy migration energy. The vacancy void growth rate at the beginning of the transient swelling stage is used as a characteristic of the susceptibility to radiation swelling. This rate is diameter independent for the samples under study.
Об авторах
A. Kozlov
Institute of Nuclear Materials
Email: portnykh_ia@mail.ru
Россия, Zarechnyi, Sverdlovsk oblast, 624250
O. Asiptsov
Institute of Nuclear Materials
Email: portnykh_ia@mail.ru
Россия, Zarechnyi, Sverdlovsk oblast, 624250
I. Portnykh
Institute of Nuclear Materials
Автор, ответственный за переписку.
Email: portnykh_ia@mail.ru
Россия, Zarechnyi, Sverdlovsk oblast, 624250