| 研究課題/領域番号 |
20K15057
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| 研究種目 |
若手研究
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| 配分区分 | 基金 |
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| 審査区分 |
小区分26050:材料加工および組織制御関連
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| 研究機関 | 名古屋大学 (2022)
東北大学 (2020-2021) |
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研究代表者 |
孫 飛 名古屋大学, 工学研究科, 特任講師 (00836562)
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| 研究期間 (年度) |
2020-04-01 – 2023-03-31
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| 研究課題ステータス |
完了 (2022年度)
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| 配分額 *注記 |
4,160千円 (直接経費: 3,200千円、間接経費: 960千円)
2022年度: 910千円 (直接経費: 700千円、間接経費: 210千円)
2021年度: 1,430千円 (直接経費: 1,100千円、間接経費: 330千円)
2020年度: 1,820千円 (直接経費: 1,400千円、間接経費: 420千円)
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| キーワード | Ni-Fe-based superalloy / L12 ordered precipitate / Orowan mechanism / Dislocation / dislocation / strengthening mechanism / precipitation behavior / Orowan looping |
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| 研究開始時の研究の概要 |
This study focuses on novel strengthening mechanisms of high-strength Ni-Fe based superalloys. High content of Fe addition not only decreases the production cost, but still has better creep ruptured properties than some other Ni-based superalloys. The effect of Fe addition on the microstructure stability and deformation behaviors need to be studied. Compositions, heat treatment methods, precipitation behaviors, and interactions with dislocations could be controlled and investigated in combination with numerical simulations for better further understanding the strengthening mechanisms.
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| 研究成果の概要 |
High content of Fe addition in Ni-Fe-based superalloys not only decreases the production cost but still has better mechanical properties than some other Ni-based superalloys. Ni-Fe-based superalloys has been optimized according to the well studied novel strengthening mechanisms.
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| 研究成果の学術的意義や社会的意義 |
This Ni-Fe-based superalloy with low cost, good workabilities, great creep ruptured life has been considered as the promising candidate materials for hot section components in advanced ultra-supercritical power plants to improve electricity-producing efficiency, reduce CO2 emission and fuel cost.
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