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Information × Registration Number 0220U104216, 0119U101684 , R & D reports Title Development of radiation-resistant steels and multicomponent concentric alloys with controlled structural state and high operational properties for use in nuclear energy popup.stage_title Head Tihonovskiy Mihaylo A., Кандидат фізико-математичних наук Registration Date 14-12-2020 Organization National Science Center "Kharkiv Institute of Physics and Technology" popup.description2  The proposed IPD in the temperature range where there is an austenitic phase, accompanied by significant grinding of the grain structure, including the martensitic component, local stresses and high density of dislocations. During annealing, the final formation of carbide precipitates of the M23C6 and MX type occurs, which restrain the movement of dislocations and stabilize the structure with an average subgrain size of ~ 200 nm. It is established that the submicron structure of T91 steel intensifies the process of surface oxide film formation during exposure to lead melt, and the formed continuous film based on Cr and Si blocks the penetration of lead into the depth of the matrix and alloying elements into the melt, which improves corrosion properties. Studies of mechanical characteristics have shown that the maximum high-temperature tensile strength after annealing is observed in steel with higher values ​​of carbide emissions of the MX type and was 568 MPa and 415 MPa for annealing at 550 ° C and 600 ° C, respectively. It is shown that the swelling of steel obtained using the proposed IPD and subsequent annealing 600 ° C / 25h, which has a submicron structure 1.3 times lower than in steel T91 in the initial state. Such a difference in the levels of swelling is due to the difference in structure, and, as a consequence, to the different mechanisms of radiation damage. Product Description popup.authors Efimov Olexander A. Andrievska Natalia F. Vasylenko Ruslan Leonidovych Velykodnyi Oleksiy M. Voevodin Victor M. Kislyak Igor P. Kalchenko Olexandr S. Karpov Sergiy O. Kolodiy Igor Viktorovych Kondratov Оlexander О Kopanets Igor Ye. Kuchar Ivan S. Levenets Anastasia V. Litovchenko Sergiy V. Lukyanenko Alexander G Melnyk Khrystyna R Nazarenko Eugeniy V. Okovit Volodymyr S. Onyschenko Leonid V. Panov Volodymyr A. Pylypenko Mykola M. Rostova Ganna Yu. Stoev Petrо I. Tantsura Iryna G Tikhonovska Tetyana M. Tikhonovsky Mykhailo A. Tolmachova Galyna M. Tolstolutska Galyna D. Tortyka Olexander Stepanovyh Fedirko Viktor M. Chyshkala Volodymyr Oleksiyovych popup.nrat_date 2020-12-14 Close