2022 Fiscal Year Final Research Report
Novel strengthening mechanisms of high-strength Ni-Fe-based superalloys
| Project/Area Number |
20K15057
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 26050:Material processing and microstructure control-related
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| Research Institution | Nagoya University (2022)
Tohoku University (2020-2021) |
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Principal Investigator |
Sun Fei 名古屋大学, 工学研究科, 特任講師 (00836562)
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Keywords | Ni-Fe-based superalloy / L12 ordered precipitate / Orowan mechanism / Dislocation |
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| Outline of Final Research Achievements |
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. Related phycical prameters during the multi-Orowan looping process have been also studied. Ni-Fe-based superalloy has been optimized according to the well studied novel strengthening mechanisms and finally achieved better mechanical properteis.
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| Free Research Field |
Structural material science and engineering
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| Academic Significance and Societal Importance of the Research Achievements |
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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