Transition from microstructures to nanostructures and ultimate hardening
Regularities of change in the dependence of the yield stress on grain size in transition from the microstructured to the nanostructured state are discussed. It is shown that, using S-functions, a generalized equation for the yield strength dependence on the grain size with regard to changes in the h...
Збережено в:
| Видавець: | НТК «Інститут монокристалів» НАН України |
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| Дата: | 2009 |
| Автори: | , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
НТК «Інститут монокристалів» НАН України
2009
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| Назва видання: | Functional Materials |
| Теми: | |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/138928 |
| Теги: |
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| Цитувати: | Transition from microstructures to nanostructures and ultimate hardening // S.A. Firstov, T.G. Rogul, O.A. Shut // Functional Materials. — 2009. — Т. 16, № 4. — С. 364-373. — Бібліогр.: 40 назв. — англ. |
Репозиторії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | Regularities of change in the dependence of the yield stress on grain size in transition from the microstructured to the nanostructured state are discussed. It is shown that, using S-functions, a generalized equation for the yield strength dependence on the grain size with regard to changes in the hardening mechanisms of polycrystals in the vicinity of critical grain sizes dcr₁ and dcr₂ can be obtained. This equation enables to describe the softening effects in transition to nanostructures (the so-called "negative" trend of the Hall-Petch relationship) and an abrupt hardening under conditions of increased intergranular cohesive strength. |
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