Surface crack propagation in plate specimens of 1Cr-1Mo-1/4V turbine rotor steel under creep-fatigue condition.
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概要
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It is important to know the crack propagation behavior under creep-fatigue condition in order to insure the security of high temperature components. In this study, crack propagation tests were conducted using two sizes of plate specimens of a 1Cr-1Mo-1/4V forged steel with a through or surface crack at 550°C. Regardless of the specimen size and crack shape, the crack propagation rate was correlated well with creep J-integral range, whereas it was not with elastic stress intensity factor nor net section stress. A numerical simulation method was successfully developed for the surface crack propagation on the basis of the relationship between crack propagation rate and creep J-integral range.
- The Iron and Steel Institute of Japanの論文
著者
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Ohtani Ryuichi
Department Of Engineering Physics And Mechanics Faculty Engineering Kyoto University
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Kitamura Takayuki
Department Of Anesthesia And Pain Relief Center The University Of Tokyo Hospital
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Ohtani Ryuichi
Department of Engineering Science, Faculty of Engineering, Kyoto University
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Sakanoue Yoshinori
Kyoto University
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Wakabayashi Masatoshi
Department of Engineering Science, Faculty of Engineering, Kyoto University
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