Application of hydrogen embritlement models to the blister growth behavior in 12Cr2MoNbVB steel and α -Fe exposed to low-energy D plasma

• Дата: 2017
• Автори: Nikitin, A.V., Tolstolutskaya, G.D., Ruzhytskiy, V.V., Kopanets, I.E., Karpov, S.A., Vasilenko, R.L., Rostova, G.Y., Rybalchenko, N.D., Sungurov, B.S.
• Формат: Стаття
• Мова: English
• Опубліковано: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2017
• Назва видання: Вопросы атомной науки и техники
• Теми: Физика радиационных повреждений и явлений в твердых телах
• Онлайн доступ: https://nasplib.isofts.kiev.ua/handle/123456789/134045
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Application of hydrogen embritlement models to the blister growth behavior in 12Cr2MoNbVB steel and α -Fe exposed to low-energy D plasma / A.V. Nikitin, G.D. Tolstolutskaya, V.V. Ruzhytskiy, I.E. Kopanets, S.A. Karpov, R.L. Vasilenko, G.Y. Rostova, N.D. Rybalchenko, B.S. Sungurov // Вопросы атомной науки и техники. — 2017. — № 2. — С. 22-28. — Бібліогр.: 22 назв. — англ.

Processes of blisters and associated subsurface cracks nucleation during exposure of 12Cr2MoNbVB ferritic-martensitic steel and α-Fe under glow discharge hydrogen (deuterium) plasma with ion energies of ~ 1 keV and ion fluencies up to 2·10²⁴ D/м² at various temperatures have been examined. The methods used were scanning electron microscopy, thermal desorption spectroscopy and the D(³He, p)⁴He nuclear reaction. Temperature dependence of average blister diameter, the deuterium depth distribution and retention were studied. Application of hydrogen induced cracking models was considered to assess the effects of hydrogen from the plasma on the development of blisters and subsurface cracks. Based on this analysis, it is shown that significant crack growth rates can occur during reactor shut-down periods when the temperature of the structure decreases to less than about 373 K.