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Information × Registration Number 0219U004286, 0116U005094 , R & D reports Title The physical mechanisms study of radiation-induced degradation of the functional properties of existing and future nuclear-generating complexes of the new generation to ensure the Ukraine energy safety popup.stage_title Head Voyevodin Victor Mykolayovych, Доктор фізико-математичних наук Registration Date 24-04-2019 Organization National Science Center "Kharkiv Institute of Physics & Technology" popup.description2 The interaction of hydrogen and helium with structural materials has been studied in a wide range of temperatures and doses of implantation. The experimental methods which were used make it possible to numerically control the kinetics of accumulation, the distribution in the volume and the thermally activated desorption of ion-implanted gas atoms. It was first established that the behaviour of hydrogen, its mass transfer and accumulation are determined by the complex effect of the radiation-induced structure, the surface state and the presence of helium. For the first time, a correlation between the structure that was formed under irradiation and the level of deuterium accumulation has been established. Three temperature ranges with different behaviour of the "Zr-D2" system, which was formed after irradiation at room temperature have been established. The development of helium porosity during the X18H10T steel annealing, which was irradiated at room temperature was studied by helium ions with E = 20 keV for simultaneous creation of damages, which displace at the level of 0.5-5 dpa, and helium concentration of 1-12 at.%. At the study of helium porosity, which was formed during the low-temperature exposure, the mechanism of bubbles growth is established. The growth of bubble nuclei upon further annealing occurs by the Oswald mechanism (He's dissolution and re-capture). A correlation between the microstructure evolution and the irradiated steel layer hardness change is established. It is shown that the main factor of 316-steel hardening under irradiation is the formation of the Frank dislocation loops of interstitial types. Product Description popup.authors Воєводін Віктор Миколайович Журба Володимир Iванович Карпов Сергій Олександрович Копанець Ігор Євгенович Морозов Олександр Миколайович Нiкiтiн Аркадiй Валерiйович Проголаєва Вiкторiя Олександрiвна Ружицький Валерій Володимирович Толстолуцька Галина Дмитрівна popup.nrat_date 2020-04-02 Close