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Information × Registration Number 0223U001461, 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 Head Mykhailovskyi Ihor M., Доктор фізико-математичних наукSokolenko Volodymyr I., Доктор фізико-математичних наук Registration Date 28-01-2023 Organization National Science Center "Kharkiv Institute of Physics and Technology" popup.description2 Research Report: p. 44, fig. 14, tab. 1, 34 sources, 27 publications. Using field ion microscopy, the tensile strength of W i Mo nanocrystalline samples, monatomic carbon chains, and graphene nanosheets with a width of 0.5-2.8 nm was measured at 77 K. The nature of changes in the surface relief of nano-sized needle-like W i Mo samples as emitters was determined at bombardment with low-energy helium ions. The local values of the relative deformation of bonds in the processes of thermally activated rupture of carbon chains at temperatures up to 2500 K were calculated using MD modeling methods. The influence of ultrasound and electron irradiation on the structure evolution and creep at 20oC and 350oC of nanostructured titanium VT1-0 was investigated. An increase in the strength limit while maintaining the yield and plasticity limits during creep tests, which is determined by ultrasound, is shown. Titanium remains in a nanostructured state after irradiation and retains high strength characteristics, which indicates the possibility of practical application at temperatures in the region of 20oC Key words: tungsten, molybdenum, titanium, carbon chain, graphene, nanostructural state, ultrasound, irradiation, mechanical properties, field ion microscopy, mathematical modeling.  Product Description popup.authors Karaseva Evgeniya Vasylivna Mazilova Tetyana Ivanivna Sadanov Evgeniy Victorovych Sokolenko Volodymyr Ivanovych popup.nrat_date 2023-01-28 Close