| Project/Area Number |
26630338
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Structural/Functional materials
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| Research Institution | Tohoku University |
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Principal Investigator |
Omori Toshihiro 東北大学, 工学(系)研究科(研究院), 准教授 (60451530)
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| Co-Investigator(Renkei-kenkyūsha) |
KAINUMA Ryosuke 東北大学, 大学院工学研究科, 准教授 (20202004)
OHNUMA Ikuo 物質・材料研究機構, グループリーダー (20250714)
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 耐熱材料 / 金属間化合物 / 相安定性 / 状態図 / 超合金 / 相平衡 |
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| Outline of Final Research Achievements |
Ni-based superalloys strengthened by Ni3Al gamma-prime phase with the L12 structure show good high-temperature strength. It has been also found that gamma-prime phase exists in the Ir-Al-W system. This study was intended to develop Ni-Ir-Al-W alloys having excellent high-temperature strength. We determined the phase diagrams of the Ni-Ir-Al-W systems. It was found that the gamma-prime phase can be stabilized by addition of Ir and W to Ni-Al alloys and that the melting temperature also increases. The Ni-Ir-Al-W alloys show higher strength at higher temperatures compared with that in Ni-based superalloys.
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