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Registration Number

0215U009132, 0113U005366 , R & D reports

Title

Increased resources and reliability of structural materials active zones Ukrainian NPPs by optimizing the structural state and microalloying

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Head

Voyevodin Victor Mykolayovych, Доктор фізико-математичних наук

Registration Date

20-10-2015

Organization

National Science Center "Kharkiv Institute of Physics and Technology

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Irradiation of alloy E110 within the dose range 20-50 dpa at temperatures 390°C and 550°C were carried out. Also electron microscopic study of irradiated structure were carried out. It was shown that: - Irradiation ay temperature 390°C and dose range 5-50 dpa leads to radiation induced dislocation loops of <a> and <c> type and dislocation network. - Size and density of dislocation loops increase with the dose. - At irradiation dose more than 20 dpa occurs formation of <c> type dislocation what corrects with the beginning of accelerated radiation grows. - Irradiation temperature has great influence on size and concentration of dislocation loops. With increasing of temperature loop size increasing too, but concentration decrease. - At high irradiation dose we had a decrease of B-niobium concentration in niobium phase from 74-82%wt. to 5-22%wt. - Preparated samples from tubes of alloy E125 for next irradiation. Investigation of structure and phase composition of alloy E125 were carry out. Performed average grain size, composition of precipitate of second phase, size and concentration. Investigated density of dislocations before irradiation. Preformed irradiation of samples of alloy E125 within damage dose 20-30 dpa at irradiation temperature 390°C and started electron microscopy investigation of irradiation samples.5481

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Автушко Анатолій Андрійович
Бородін Олег Вікторович
Брик Віктор Васильвич
Василенко Руслан Леонідович
Воєводін Віктор Миколайович
Кальченко Олександр Сергійович
Купрянова Юлія Едуардівна
Лимар Раїса Іванівна
Мельниченко Валентин Вікторович
Назаренко Євген Олександрович
Пилипенко Микола Миколайович
Шевцов Анатолій Богданович

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2020-04-02