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Information × Registration Number 0221U107079, 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 26-12-2021 Organization National Science Center "Kharkiv Institute of Physics and Technology" popup.description2  Ingots of light-weight multicomponent titanium alloys of two compositions: Ti60Cr11Al7 Nb11V11 and Ti60Cr11Al7Nb22 (at.%) were proposed and manufactured by arc melting in an atmosphere of pure argon. Structural studies showd that final annealing at 700 ° C and 800 ° C leads to the formation of two-phase structure. Annealing at 900 ° C leads to the formation of a single-phase state in the form of a solid solution with a bcc lattice and average grain sizes of 68 and 52 μm. When the samples were kept in a lead coolant for 500 and 1000 hours at a temperature of 500 ° C, it was established that the diffusion of oxygen into the titanium matrix of the alloys leads to the formation of an oxide film on the melt-alloy interface, which serves as a barrier for further lead penetration. The thickness of the formed oxide layer on the surface of the alloys is the same or less than that of the previously investigated reactor steels, which indicates their high corrosion resistance. It was found that the main mechanism that determines the strength of the studied alloys is solid solution hardening. The Ti60Cr11Al7 Nb11V11 alloy showed higher strength values. The developed alloy after optimal heat treatment at high strength characteristics has high plasticity, which is several times higher than the plasticity of known high-temperature titanium alloys. Obtained results indicate the prospect of using multicomponent titanium alloys as materials in new generation nuclear reactors. Product Description popup.authors Efimov Olexander Anatolievich Azhazha Roman V. Andrievska Natalia F. Antonenko Mykola I. Vasylenko Ruslan L. Velikodny Olexey M Kislyak Igor Pylypovych Kalchenko Olexandr S. Kolodiy Igor Viktorovich Kondratov Olexander Olexandrovich Kukhar Ivan S. Levenets Anastasiya V. Lytovchenko Serhii V. Lukyanenko Oleksandr Genadiyovych Melʹnyk Khrystyna R Nazarenko Yevhen O Okovit Volodymyr S. Onyschenko Leonid V. Panov Volodymyr A. Pugach Sergiy Grygorovych Rostova Hanna Yuriivna Solopikhina Olena Sergijivna Stoev Peter Ilyich Tantsyura Iryna Hryhorivna Tykhonovskyy Mykhaylo A. Tikhonovskaya Tetyana Mykhailivna Tolmachova Galyna M. Tolstolutska Galyna D Tortyka Olexander Stepanovyh Turchyn Oleksiy Andrijovych Fedirko Viktor M Chyshkala Volodymyr Oleksijovych popup.nrat_date 2022-03-09 Close