2016 Fiscal Year Final Research Report
Room and High Temperature Strength of Harmonic Structured Composite with Almina Dispersed Ti-Al and Titanium
| Project/Area Number |
26420729
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Structural/Functional materials
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| Research Institution | Shizuoka Institute of Science and Technology (2016)
Doshisha University (2014-2015) |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 調和組織制御 / メカニカルミリング / 放電プラズマ焼結 / Ti-Al合金 |
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| Outline of Final Research Achievements |
The microstructure of the harmonic-structured composite was composed by dispersive regions of pure Ti and the network region of Alumina particles dispersed Ti-Al alloys. Vickers hardness test at room temperature reveal that dispersive, network and overall regions of this material demonstrate 207, 845 and 234 HV, which was higher than the conventional Ti-Al alloy / pure Ti harmonic-structured composite, respectively. These improvements of hardness are due to effect of Alumina dispersed particle. Vickers hardness at 873 K and 1073 K corresponds to 102 and 81 HV, respectively. Observation of the Vickers indentation at room temperature and 873 K reveal that the network region prevents the deformation by the indenter and the dispersed region keeps the progress of crack stopping. These results suggest that Alumina dispersed Ti-Al / pure Ti harmonic structured composite is expected in use up to 873 K.
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| Free Research Field |
材料工学
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