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- Katsumura Yuji
- 東芝タンガロイ(株)
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- Takatsu Sokichi
- 東芝タンガロイ(株)
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- Kobori Keiichi
- 東芝タンガロイ(株)
Bibliographic Information
- Other Title
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- 一軸圧縮下における超硬合金の超音波減衰について
- 1ジク アッシュク カ ニ オケル チョウコウゴウキン ノ チョウオンパ ゲンスイ ニ ツイテ
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Abstract
Changes of ultrasonic attenuation under uniaxial compression have been investigated for WC-Co alloys containing various cobalt contents and grain sizes by means of a conventional ultrasonic apparatus; the measuring frequency was 10 MHz. The attenuation of the alloys plotted against the amount of prestrain began to increase rapidly above some critical strain. This critical strain increased with increasing Co contents and grain sizes of WC. The ratio of the compressive rupture strain (εr) and the critical strain (εc) invariably remained constant, i.e.εr/εc≅4. Microscopic observations showed that the generation of micro-cracks at grain boundaries is responsible for the increase of the attenuation. Under compressive fatigue stresses, the attenuation increased rapidly after a certain number of fatigue cycles prior to the rupture of the alloy.
Journal
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- Journal of the Japan Society of Powder and Powder Metallurgy
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Journal of the Japan Society of Powder and Powder Metallurgy 20 (1), 23-29, 1973
Japan Society of Powder and Powder Metallurgy
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Keywords
Details 詳細情報について
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- CRID
- 1390001206308258944
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- NII Article ID
- 130000816742
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- NII Book ID
- AN00222724
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- ISSN
- 18809014
- 05328799
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- NDL BIB ID
- 7641941
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed