2017 Fiscal Year Final Research Report
Viscous flow processing of a monosized Fe-based metallic glass particle and precise mini ature molding
| Project/Area Number |
16K14432
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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 |
Material processing/Microstructural control engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Keywords | 粉末冶金 / 金属ガラス / 過冷却液体 / 粘性流動 / マイクロ成形 |
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| Outline of Final Research Achievements |
Fe-based metallic glasses have excellent properties; however, they are difficult to form into complex shapes because of their high hardness with poor plasticity. In this study, we proposed a novel two-step fabrication process for micro components using viscous flow of an Fe-based metallic glass under super-cooled liquid region. We successfully prepared mono-sized [(Fe0.5Co0.5)0.75 Si0.05B0.2]96Nb4 spherical particles with precisely controlled volumes that correspond to the desired micro component volume. It is confirmed that the prepared spherical particles were composed of a single glassy phase. Then, one prepared particle was die-pressed into one micro component under the super-cooled liquid region. The main deformation mechanism is viscous flow and the micro hot-press apparatus was used to realize the optimal processing conditions for micro viscous flow.
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| Free Research Field |
粉末冶金
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