Analysis of the Pattern of Fracture Surface and the Life Evaluation in Creep-Fatigue Interaction under Ultrahigh-Vacuum Environment
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概要
- 論文の詳細を見る
Following creep-fatigue tests with Modified 9Cr-1Mo Steel in a high-vacuum environment, creep-fatigue surfaces were observed by SEM. In the cases where the creep-fatigue life is time- or rate-independent, the primary fracture mode is the transgranular type, but some differences were observed in the number of dimples being dependent on the strain wave form. When time- or rate-dependent life reduction takes place, the primary fracture mode is found to be of the intergranular type. This intergranular fracture mode is mainly observed on the inner side of the specimen, and the fracture mode becomes transgranular on the outer side. The area being fractured in the intergranular manner is correlated to the time-dependent damage variable calculated by the creep-fatigue life evaluation model based on the overstress.
- 一般社団法人日本機械学会の論文
- 1994-10-15
著者
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ASADA Yasuhide
Department of Mechanical Engineering, The University of Tokyo
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Asada Y
Central Res. Inst. Electric Power Ind. Tokyo Jpn
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Asada Yasuhide
Department Of Mechanical Engineering The University Of Tokyo
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NAKAMURA Toshiya
Department of Biochemistry, Hirosaki University School of Medicine
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Nakamura T
Univ. Tokyo Tokyo Jpn
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Yaguchi Masatsugu
Department of Mechanical Engineering, The University of Tokyo
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Nitta Yasuo
Department of Mechanical Engineering, Faculty of Engineering, The University of Tokyo
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Nitta Yasuo
Department Of Mechanical Engineering Faculty Of Engineering The University Of Tokyo
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Yaguchi M
Central Res. Inst. Electric Power Ind. Tokyo Jpn
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