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Information × Registration Number 0222U003517, 0119U102415 , R & D reports Title Integrated multiscale modelling and experimental test of radiation resistance of constructional materials in reactors with lifetime over 60 years. popup.stage_title Head Storizhko Volodymyr Yu., Доктор фізико-математичних наук Registration Date 08-04-2022 Organization Institute of Applied Physics National Academy of Sciences of Ukraine popup.description2 Studies was carried out to develop a comprehensive scheme of integrated multilevel modeling, combining calculations of the first principles, thermodynamic and mechanical approaches for modeling the radiation resistance of WWER reactor hull steels. In particular, the stress-strain state of an elastic piecewise homogeneous strip with a semi-infinite crack at the interface of materials is investigated. The dependences of the surface concentration of Cr in the Fe-9Cr alloy on the rate of production of radiation point defects are analyzed. The algorithm of numerical modeling of the diffusion stage of precipitate evolution in reactor construction materials under the influence of neutron irradiation has been improved. A method for determining the concentration profiles of impurities in nuclear energy materials by the PIXE method was developed, and experimental studies of the physicochemical composition and structure of samples of zirconium alloys and hulls irradiated with ions were performed. The phase method of analysis of positron lifetime spectra has been developed and used. Product Description popup.authors Bystryk Yurii S. Denisenko Vitaliy L. Dudnyk Andrii B Koropov Oleksandr V. Kramchenkov Andrii B Krukla Sergey V. Ostryk Volodymyr I Skorokhod Roman V. Kharchenko Dmytro O. popup.nrat_date 2022-04-08 Close