Grain-Boundary Diffusion of Hydrogen Atoms in the α-Iron
Grain boundary diffusion of hydrogen atoms in the α-iron is analysed based on the theoretical modelling. By means of molecular-dynamics simulation of hydrogen-atoms’ migration in selected special grain boundaries with different misorientation angles as well as in the bulk, it is demonstrated that th...
Збережено в:
| Дата: | 2014 |
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| Автори: | , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Інститут металофізики ім. Г.В. Курдюмова НАН України
2014
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| Назва видання: | Металлофизика и новейшие технологии |
| Теми: | |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/107035 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Grain-Boundary Diffusion of Hydrogen Atoms in the α-Iron / S.M. Teus, V.G. Gavriljuk // Металлофизика и новейшие технологии. — 2014. — Т. 36, № 10. — С. 1399-1410. — Бібліогр.: 52 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | Grain boundary diffusion of hydrogen atoms in the α-iron is analysed based on the theoretical modelling. By means of molecular-dynamics simulation of hydrogen-atoms’ migration in selected special grain boundaries with different misorientation angles as well as in the bulk, it is demonstrated that the activation enthalpy of hydrogen migration in the grain boundary is higher than that in the bulk. Based on this result, a conclusion is made that grain boundaries in the iron are traps for hydrogen atoms and retard their migration. As supposed, an increase in the hydrogen grain-boundary diffusion, as observed in some experiments, is related to the hydrogen-caused intergranular cracking |
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