Radiation swelling and hardness of high-entropy alloys based on the TiTaNbV system irradiated with krypton ions

Ivanov I.A. Ryskulov A. Kurakhmedov A. Kozlovskiy A. Shlimas D. Zdorovets M.V. Uglov V.V. Zlotski S.V. Ke J.
December 2021 Springer

Journal of Materials Science: Materials in Electronics
2021 #32 Issue 23 27260 - 27267 pp.

The aim of this work is to study the effect of irradiation with low-energy Kr¹⁴⁺ ions with an energy of 280 keV on radiation swelling and a decrease in the strength characteristics of high-entropy alloys based on the TiTaNbV system. The prospects of these studies are due to the possibility of obtaining new data on the radiation resistance of high-entropy alloys, which have great potential for use as structural materials for new-generation reactors. The choice of this type of irradiation and a dose of 5 × 10¹⁵ Kr/cm² made it possible to simulate the effect of radiation swelling arising at a displacement per atom of 30–50 dpa in a small surface layer no more than 100–150 nm thick. During the studies carried out, it was found that the formed medium- and high-entropy alloys TaNbV and TiTaNbV have increased resistance to swelling and deformation of the crystal structure. At the same time, alloys of the NbV and TaNbV type have the highest degree of resistance to softening, while the TiTaNbV alloy has a lower resistance to swelling, since the addition of titanium leads to a decrease in the density and hardness of the alloy.

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The Institute of Nuclear Physics of Republic of Kazakhstan, Almaty, Kazakhstan
L.N. Gumilyov Eurasian National University, Nur-Sultan, Kazakhstan
Ural Federal University, Yekaterinburg, Russian Federation
Belarusian State University, Minsk, Belarus
Beijing Institute of Technology, Beijing, China

The Institute of Nuclear Physics of Republic of Kazakhstan
L.N. Gumilyov Eurasian National University
Ural Federal University
Belarusian State University
Beijing Institute of Technology

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