| Project/Area Number |
20560093
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Materials/Mechanics of materials
|
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| Research Institution | Ritsumeikan University |
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Principal Investigator |
SAKANE Masao Ritsumeikan University, 理工学部, 教授 (20111130)
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| Co-Investigator(Kenkyū-buntansha) |
ZAHNG Shengde 立命館大学, 理工学部, 助教 (00454520)
|
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| Co-Investigator(Renkei-kenkyūsha) |
YOSHINARI Akira 株式会社日立製作所, 日立研究所, 主管研究員 (90505645)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2009: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2008: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | 単結晶超合金 / 疲労 / 多軸応力 / 十字型試験片 / 高温 |
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| Research Abstract |
A method of multiaxial creep-fatigue life evaluation was developed for Nickel-base single crystal superalloy in this study. Biaxial tension-compression creep-fatigue tests with hold-times at the compressive peak strain were performed using YH-61 cruciform specimen at 1173K. Effect of the stress multiaxiality on the creep-fatigue life was discussed and crystal direction of the crack initiation was obtained experimentally. In addition, three dimensional elastic-plastic finite element analyses with considering the anisotropy of single crystal were performed to develop the creep-fatigue life evaluation method under multiaxial stress states.
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