Relation between the vacancy migration energy in austenitic steels and their resistance to irradiation-induced swelling
- Authors: Kozlov A.V.1, Portnykh I.A.1, Tselishchev A.V.2,3
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Affiliations:
- Institute of Nuclear Materials
- Bochvar High-Technology Institute of Inorganic Materials (VNIINM)
- National Research Nuclear University MEPhI
- Issue: Vol 2016, No 1 (2016)
- Pages: 39-44
- Section: Article
- URL: https://journals.rcsi.science/0036-0295/article/view/170321
- DOI: https://doi.org/10.1134/S0036029516010092
- ID: 170321
Cite item
Abstract
The effect of the vacancy migration energy in austenitic steels on their resistance to irradiation-induced swelling is studied. ChS68 and EK164 steels, whose energies of vacancy migration differ by 0.1 eV from each other, are used to show that the steady-state vacancy concentration in the EK164 steel is less than that in the ChS68 steel. This difference explains why the critical pore nucleus diameter (after which pore grows owing to an unbalanced vacancy flow) in the EK164 steel is larger than that in the ChS68 steel. As compared to the ChS68 steel, a larger number of helium atoms and, correspondingly, a longer incubation swelling time are required for such a pore nucleus to form in the EK164 steel.
About the authors
A. V. Kozlov
Institute of Nuclear Materials
Author for correspondence.
Email: kozlov_av@irmatom.ru
Russian Federation, Zarechnyi, Sverdlovsk oblast, 624250
I. A. Portnykh
Institute of Nuclear Materials
Email: kozlov_av@irmatom.ru
Russian Federation, Zarechnyi, Sverdlovsk oblast, 624250
A. V. Tselishchev
Bochvar High-Technology Institute of Inorganic Materials (VNIINM); National Research Nuclear University MEPhI
Email: kozlov_av@irmatom.ru
Russian Federation, Moscow, 123098; Kashirskoe sh. 31, Moscow, 115409