| Project/Area Number |
23760675
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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 |
Structural/Functional materials
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
SOMEKAWA Hidetoshi 独立行政法人物質・材料研究機構, 元素戦略材料センター・構造材料ユニット, 主任研究員 (50391222)
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2011: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 破壊 / マグネシウム / 溶質原子 / 結晶粒界 / 分子動力学 / 材料工学 / 溶質元素 |
|---|
| Research Abstract |
The additional alloying elements affected the fracture toughness and the fracture mechanism in the fine-grained magnesium alloys, and these behaviors were closely related to the segregation energy. The alloys that had low segregation energy indicated high fracture toughness and the ductile fracture, while the alloys with large segregation energy exhibited low fracture toughness and the intergranular fracture. The change in the lattice parameter ratio was found to be the influential material parameter regardless of whether the grain boundary embrittlement was for enhancement or suppression in magnesium.
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