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
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Head
Tihonovskiy Mihaylo A., Кандидат фізико-математичних наук
Registration Date
14-12-2020
Organization
National Science Center "Kharkiv Institute of Physics and Technology"
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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
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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
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2020-12-14
