| Project/Area Number |
25820006
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | Gifu University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2015-03-31
|
| Project Status |
Completed (Fiscal Year 2014)
|
| Budget Amount *help |
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 疲労 / マイクロマテリアル |
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| Outline of Final Research Achievements |
In this study, the dependency of the fatigue property of the Mg alloy on the microstructure was investigated using our self-made fatigue testing machine for a very small specimen of a micro material fabricated from a single crystal. The fatigue test results exhibited that the fatigue strength of the micro material was higher than that of the bulk material with the normal size and the scatter of the micro material was larger than that of the bulk material. The basal sliding, the twinning and the pyramidal sliding operated in each specimen in the increasing order of the fatigue strength, respectively. Besides, they were dependent strongly on the relationship between the crystal orientation and the loading direction. On the other hand, fatigue cracks initiated from the double twinning in most of the specimens of the bulk material and it is found that the operating deformation mechanism of the bulk material is different from that of the micro material.
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