High-temperature Fatigue Property of a W-Mo Type High-speed Steel
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- Terazawa Tadashi
- Division of Mechanical Science and Engineering, Kanazawa University
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- Hasegawa Tomoyuki
- Division of Mechanical Science and Engineering, Kanazawa University
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- Mitani Takashi
- Machine & Cutting Tool Division, Nachi-Fujikoshi Corp.
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- Watanabe Chihiro
- Division of Innovative Technology and Science, Kanazawa University
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- Monzen Ryoichi
- Division of Innovative Technology and Science, Kanazawa University
Bibliographic Information
- Other Title
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- W‐Mo系高速度工具鋼の高温疲労特性
- W-Mo系高速度工具鋼の高温疲労特性
- W Moケイ コウソクド コウグ コウ ノ コウオン ヒロウ トクセイ
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Abstract
Fatigue tests of W–Mo type high-speed steel specimens were carried out at 20 and 600°C under various stress amplitudes σ. Fatigue lives of the specimens tested at 20 and 600°C under each amplitude between 1100 and 1400 MPa were identical, but under each amplitude between 700 and 1000 MPa, those of the specimens tested at 600°C were shorter than those at 20°C. Fracture origins of the specimens fatigued at 20°C under all stress amplitudes and at 600°C under σ≧1100 MPa were large aggregates of 10~13 μm, comprising two or three M6C·MC carbides, and those tested at 600°C under σ≦1000 MPa were large isolated M6C·MC carbides of about 8 μm. When fatigued at 20°C under all stress amplitudes and at 600°C under σ≧1100 MPa, a crack propagated between two voids, produced by decohesion of the M6C/MC interfaces, in adjacent large two M6C·MC carbides which constitute a carbide aggregate, whereas in the specimens tested at 600°C under σ≦1000 MPa, cracking was initiated from the voids in large isolated M6C·MC carbides of about 8 μm. The fatigue lives of the specimens tested at 600°C under σ≦1000 MPa are shorter because the nucleation of cracks from isolated M6C·MC carbides occurs more rapidly than that of cracks in large M6C·MC carbide aggregates.
Journal
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- Tetsu-to-Hagane
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Tetsu-to-Hagane 95 (9), 655-659, 2009
The Iron and Steel Institute of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390282680102403456
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- NII Article ID
- 130000137008
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- NII Book ID
- AN10528571
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- ISSN
- 1341688X
- 18832954
- 00211575
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- NDL BIB ID
- 10339442
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed