Defect Formation Processes in Fe–Cr–Ni Alloys by Neutron Irradiation under Thermal Cycles
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- Xu Q.
- Research Reactor Institute, Kyoto University
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- Yoshida N.
- Research Institute for Applied Mechanics, Kyushu University
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- Yoshiie T.
- Research Reactor Institute, Kyoto University
書誌事項
- タイトル別名
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- Defect Formation Processes in Fe–Cr–Ni Alloys by Neutron Irradiation under Thermal Cycles
- Defect Formation Processes in Fe Cr Ni
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抄録
It had been reported that the effects of cyclic temperature change on the radiation induced microstructural evolution in Fe–Cr–Ni alloys were very strong and complicated. In order to understand these results, accumulations of defects under varying temperature irradiations were numerically calculated based on the rate theory for defect clustering. The results indicate the microstructural evolution under varying temperature irradiation as follows. Vacancy-predominant condition appears after changing the temperature from low to high due to the decomposition of small vacancy clusters, which had formed during the low temperature irradiation, by reacting with interstitials produced by the irradiation at the high temperature. Interstitial clusters, therefore, shrink, while vacancy clusters grow by absorbing the excess vacancies. In the case of temperature change from high to low, on the other hand, the interstitial-predominant condition is held throughout the whole irradiation period, and hence interstitial clusters grow, while vacancy clusters shrink. In the cyclic temperature irradiation, the large interstitial and vacancy clusters are difficult to be formed because these clusters grew and shrank repeatly during the temperatures changed periodically.
収録刊行物
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- Materials Transactions, JIM
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Materials Transactions, JIM 38 (10), 836-841, 1997
社団法人 日本金属学会
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詳細情報
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- CRID
- 1390282679222348288
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- NII論文ID
- 10002453893
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- NII書誌ID
- AA10699969
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- COI
- 1:CAS:528:DyaK1cXktFGltw%3D%3D
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- ISSN
- 2432471X
- 09161821
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- NDL書誌ID
- 4337919
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- 使用不可