2013 Fiscal Year Final Research Report
Creep-Fatigue Life Estimation for Nickel Base Single Crystal Superalloy under Multiaxial Loading
| Project/Area Number |
23560105
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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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 立命館大学, 理工学部, 教授 (20111130)
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| Co-Investigator(Kenkyū-buntansha) |
ZAHNG Shengde 一般財団法人電力中央研究所, 材料科学研究所, 特別契約研究員 (00454520)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 高温 / 低サイクル / 疲労 / 多軸 / 超合金 |
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| Research Abstract |
The objective of this research is to develop a creep-fatigue life estimation method of nickel base single crystal superalloy for power generation gas turbines. Tension-torsion creep-fatigue tests using hollow cylinder specimens and biaxial tension-compression creep-fatigue tests using cruciform specimens were performed at 900C. Mises equivalent stress correlated the multiaxial low cycle fatigue lives and the equivalent stress modified by testing frequency correlated the creep-fatigue lives within a small scatter band.
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