Influence of neutron irradiation and ageing on behavior of SAV-1 reactor alloy
Tsay K.V. Rofman O.V. Kudryashov V.V. Yarovchuk A.V. Maksimkin O.P.
October 2021Korean Nuclear Society
Nuclear Engineering and Technology
2021#53Issue 103398 - 3405 pp.
This study observed the effect of neutron irradiation and ageing on the microstructure, hardness, and corrosion resistance of SAV-1 (Al–Mg–Si) alloy. The investigated material was irradiated with neutrons to fluences of 1021–1026 n/m2 in the WWR-K research reactor and kept in dry storage. Long-term irradiation led to an increase in hardness of the alloy and a deterioration of pitting corrosion resistance. Post-irradiation ageing for 1 h at 100–300 °C resulted in a decrease in microhardness of the irradiated SAV-1. The effect of post-irradiation ageing on pitting corrosion was made clear through the formation of Guinier-Preston zones and secondary precipitates in the Al matrix. Ageing at 250 °C corresponded to the development of stable microstructure and the highest corrosion resistance for the irradiated samples. Mg2Si, Si, and needle-shaped β″ precipitates were formed in SAV-1 alloy that was irradiated with low fluences. β″ and clusters of rod-shaped B-type precipitates were observed in highly irradiated samples. The precipitates were similar to those seen in non-irradiated pseudo-binary Al–Mg2Si alloys with Si excess.
Ageing , Corrosion , Fluence , Neutron irradiation , Precipitate , SAV-1 aluminum alloy
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Institute of Nuclear Physics, Almaty, 050032, Kazakhstan
Al-Farabi Kazakh National University, Almaty, 050060, Kazakhstan
Nazarbayev University, 010000, Nur-Sultan, Kazakhstan
National Research Nuclear University MEPhI, 115409, Moscow, Russian Federation
Institute of Nuclear Physics
Al-Farabi Kazakh National University
Nazarbayev University
National Research Nuclear University MEPhI
10 лет помогаем публиковать статьи Международный издатель
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