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Information × Registration Number 0225U001020, (0121U108478) , R & D reports Title Experimental and theoretical studies of processes at the atomic level and mechanisms of changes in the structural state and physical and mechanical properties during deformation, relaxation energy actions and irradiation of structural materials promising for use in nuclear energy and other industries popup.stage_title Комплексне дослідження механічних, пружних, дисипативних та електрофізичних властивостей високоентропійних сплавів в різних структурних станах. Дослідження впливу електролітичного гідрування на структурний стан і властивості цирконію Head Sokolenko Volodymyr I., Доктор фізико-математичних наук Registration Date 23-01-2025 Organization National Science Center "Kharkiv Institute of Physics and Technology" popup.description1 The aim of the work is to determine the regularity and physical nature of processes and mechanisms of changes in the structural state and physical and mechanical properties of structural materials and metallic and carbon nano- and picoobjects, which are promising for use in nuclear power, nanoelectronics, mechanical engineering and other industries, under force actions (different degrees of deformation at moderately low, room and elevated temperatures), relaxation energy actions (ultrasound, non-stationary magnetic fields) and irradiation (high-energy electrons, atoms and ions of inert gases), which will contribute creating the foundations for new effective technologies for improvement their properties and resource capabilities. popup.description2  Research report: pp. 37, fig. 13, tables 4, citations of sources 43, publications 27. For high-entropy alloys of the AlCrFeCoNiCu and FeMnCoCr systems in different structural states in the temperature range of 77-300 K, new data on the independent constants of the elastic tensor and elastic moduli were obtained. The mechanism of inelastic phenomena was elucidated. The first-discovered features of the low-temperature behavior of the electrical and thermophysical characteristics of the high-entropy alloy of the AlCrFeCoNiCu system are associated with the conversion of charge carriers and a change in the topology of the electron and hole sheets of the Fermi surface due to the displacement of various atoms that make up the crystal lattice. It is shown that during the electrolytic hydrogenation process, phase transformations occur on the surface of wire samples of zirconium with the formation of a layer of anisotropic nanocrystals of δ-hydride ZrH1.66, which leads to a decrease in the shear modulus by 10% in annealed samples and a significantly weaker effect in the deformed material. Keywords: high-entropy alloys, zirconium, hydrogenation, structural state, elastic characteristics, inelastic characteristics, electrophysical properties, thermophysical properties. Product Description popup.authors Karasova Yevheniia V. Korniiets Anatolii V. Sokolenko Volodymyr I. Frolov Valerii O. popup.nrat_date 2025-01-23 Close