Elucidation of gigacycle fatigue mechanism of high-strength steel using a nano beach mark method
| Project/Area Number |
23760106
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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 | National Institute for Materials Science |
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Principal Investigator |
FURUYA Yoshiyuki 独立行政法人物質・材料研究機構, 材料信頼性評価ユニット, 主幹研究員 (60354255)
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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 |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2012: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2011: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 疲労 / ギガサイクル疲労 / 高強度鋼 / 内部破壊 / 介在物 |
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| Research Abstract |
The internal fatigue crack growth was successfully visualized by using beach marks, which is necessary for the elucidation of gigacycle fatigue mechanism of high-strength steel. The beach marks indicated that a minimum crack propagation rate could be smaller than a lattice length. This means that evaluation of the gigacycle fatigue strength could be based on the crack propagation life.
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Report
(3 results)
Research Products
(5 results)
