Distribution of elements in high-entropy CoCrFeNi and NbTaTiV alloys irradiated with low-energy Kr ions

Modern challenges in the fields of nuclear energy are concentrated greatly across the increment of power and efficiency of nuclear facilities by increasing their working temperatures 1–3. Classical materials, such as steels (including austenitic), nickel and other metal alloys with a binary base, are facing phase transformations and significant degradation of physical and mechanical properties at elevated temperatures, corroding when in contact with liquid coolants and some gases, and swelling under high doses of neutron irradiation 2–3.