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Validation of the applicability of the best-fit fatigue curves for 550$$^{circ}$$C in Mod.9Cr-1Mo steel to 1$$times$$10$$^{11}$$ cycles

Toyota, Kodai ; Imagawa, Yuya ; Onizawa, Takashi  ; Kato, Shoichi ; Furuya, Yoshiyuki*

In order to design fast reactors, it is necessary to consider high cycle fatigue of structural materials up to 1$$times$$10$$^{9}$$ cycles; to evaluate high cycle fatigue at 1$$times$$10$$^{9}$$ cycles, it is necessary to develop a best-fit fatigue curve applicable up to 1$$times$$10$$^{11}$$ cycles. In this study, high cycle fatigue tests were conducted under strain-controlled conditions and ultrasonic fatigue tests were also conducted to develop a high cycle fatigue evaluation method for Mod.9Cr-1Mo steel, which is a candidate material for fast reactor structural materials. Based on the test results, the best-fit fatigue curves were extended and the applicability of the JSME best-fit fatigue curves up to 1$$times$$10$$^{11}$$ cycles was verified.

Language

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Japanese

Journal

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Nihon Kikai Gakkai Rombunshu (Internet)

Volume

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89

Number

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928

Pages

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p.23-00206_1 - 23-00206_15

Publication Year/Month

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2023/12

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Held date

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Location (city)

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Location (country)

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Patent information

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PDF

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Paper URL

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https://doi.org/10.1299/transjsme.23-00206

DOI for research data

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Keywords

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高サイクル疲労; 改良9Cr-1Mo鋼; ナトリウム冷却高速炉; 超音波疲労試験; 最適疲労曲線

Research Facility

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Press Release

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Article of JAEA R&D Review

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Cooperating Institute

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Accesses

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- Accesses

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