Registration Number
0223U005492,
(0121U108779)
, R & D reports
Title
The investigation of the structural state influence on the microstructural evolution optimization and increase of structural materials radiation resistance of the modern and future nuclear energy
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Вплив гелію і водню на процеси мікроструктурної еволюції при опроміненні.
Head
Tolstolutska Halyna D., Доктор фізико-математичних наук
Registration Date
22-12-2023
Organization
National Science Center "Kharkiv Institute of Physics and Technology"
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The purpose of research on the topic is to create a scientific basis for a successful practical solution to a number of problematic materials science issues on the mechanisms of radiation damage to nuclear materials due to radiation-induced evolution of microstructure and micro-composite composition for reaching the cost-effectivity and the safe operation of nuclear reactors
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The hypothesis of hydrogen capture by inert gas bubbles in a previously created layer of material has been experimentally confirmed. Atomic hydrogen is retained near the matrix-bubble interface with a binding energy close to the energy of chemisorption of a hydrogen atom on the steel surface.
A non-uniform distribution of inert gas bubbles in 18Cr10NiTi-ODS steels has been established due to local variations in the microstructure of steels, the interaction of bubbles with dislocations, grain boundaries and precipitates.
A decrease in the size of radiation-induced cavities and an increase in their density in the presence of inert gas atoms and, as a consequence, a decrease in swelling is an experimental confirmation of the hypothesis about the suppression of swelling in the presence of helium and inert gases formed in the materials and the phenomenological description of swelling for fixed conditions, namely dislocations, pores and other neutral sinks, including grain boundaries, incoherent precipitates, etc.discharges, etc.
Product Description
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Tolstolutska Galyna D.
Kalchenko Oleksandr S.
Karpov Sergiy O
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2023-12-23
