Internal stresses and hardness of alloys based on the V-Nb-Ta-Ti system irradiated with helium ions
Ivanov I.A. Amanzhulov B.S. Uglov V.V. Zlotski S.V. Temir A.M. Koloberdin M.V. Zdorovets M.V. Sapar A.D. Ungarbayev Y.O. Jin K.
December 2024Springer
Russian Physics Journal
2024#67Issue 122213 - 2223 pp.
The changes in internal stresses and mechanical properties of V‑Nb-Ta-Ti alloys manufactured by arc melting after irradiation with He2+ ions (40 keV) to a fluence of 2 ⋅ 1017 cm−2 are studied. The irradiation of V, VNb, and VNbTa alloys is shown to decrease the compressive macrostresses in the pre-peak region and increase them for V and VNbTa in the peak region of helium implantation. The irradiation of a VNbTaTi high-entropy alloy increases the compressive macrostresses by 44% and 50% in the two regions, respectively. The dislocation density is observed to increase significantly. The elastic modulus of VNbTa and VNbTaTi was stable, but decreased for V and VNb. The degree of hardening is the highest for V and VNb (99% and 52%, respectively) and the lowest—for VNbTa and VNbTaTi (29% and 45%, respectively). The influence of macrostresses and dislocation density on the hardness of V‑Nb-Ta-Ti alloys irradiated with He is established. VNbTaTi shows a higher radiation resistance compared to that of V, VNb, and VNbTa.
Dislocation density , Elastic modulus , Hardness , High entropy alloy , Ion irradiation , Macrostress , Radiation defects
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Institute of Nuclear Physics, Almaty, Kazakhstan
L.N. Gumilyov Eurasian National University, Astana, Kazakhstan
Belarusian State University, Minsk, Belarus
Beijing Institute of Technology, Beijing, China
Institute of Nuclear Physics
L.N. Gumilyov Eurasian National University
Belarusian State University
Beijing Institute of Technology
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