書誌事項
- タイトル別名
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- Molecular Dynamics Analysis on the degradation of the crystallinity of a grain boundary under creep loading at elevated temperature.
抄録
<p>Machines such as jet engines and gas turbines are required to reduce the emission of carbon dioxide. In order to achieve this goal, the temperature at the turbine inlet and other parts of the turbine have been raised to a high temperature in order to increase the efficiency of these machines. However, creep damage has emerged as a problem as a result of higher temperatures. Creep damage is known to reduce the grain boundary strength by decreasing the crystallinity near the grain boundary, resulting in brittle grain boundary fracture. We have confirmed the local energy concentration near the grain boundary and the atomic exhaustion behavior at the grain boundary by the creep loading analysis using the molecular dynamics method with the bi-crystal model. In this study, the effects of disordered atomic arrangement and lattice mismatch near the grain boundaries on the crystallinity degradation phenomenon were clarified by creep loading analysis using a bi-crystal model with a combination of different crystal orientations.</p>
収録刊行物
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- 計算力学講演会講演論文集
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計算力学講演会講演論文集 2021.34 (0), 030-, 2021
一般社団法人 日本機械学会
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詳細情報 詳細情報について
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- CRID
- 1390573242713736064
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- ISSN
- 24242799
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
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- 抄録ライセンスフラグ
- 使用不可