The Effect of Grain Size and Deformation Sub-structure on Mechanical Properties of Polycrystalline Copper and Cu–Al Alloys
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- Tabata Teizo
- Department of Materials Science and Engineering, Faculty of Engineering, Osaka University
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- Takagi Kazumasa
- Graduate School, Osaka University
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- Fujita Hiroshi
- Department of Materials Science and Engineering, Faculty of Engineering, Osaka University
書誌事項
- タイトル別名
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- The Effect of Grain Size and Deformation Sub-structure on Mechanical Properties of Polycrystalline Copper and Cu–Al Alloys
抄録
The grain size effect on the apparent yield and flow stresses up to 20% strain has been investigated in polycrystalline copper and Cu–Al alloys of various grain sizes at 77 and 293 K.<BR>The apparent yield stress satisfies the Hall-Petch relation in all specimens. In copper, however, the flow stresses cannot be expressed by a simple linear function but they are subdivided into two groups characterized by different linear functions of the inverse square root of the grain size. These flow stresses of copper can be roughly expressed by a single linear function of the inverse of the cell size determined by the amount of deformation, as in the case of aluminum. On the other hand, the flow stresses up to 20% strain are satisfied with the Hall-Petch relation in deformation of Cu-6.11 wt%Al alloy.<BR>The discrepancy between copper and Cu–Al alloys is discussed in terms of the effect of stacking fault energy on macroscopic and microscopic deformation modes.
収録刊行物
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- Transactions of the Japan Institute of Metals
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Transactions of the Japan Institute of Metals 16 (9), 569-579, 1975
社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390001205118891904
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- NII論文ID
- 130003485411
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- COI
- 1:CAS:528:DyaE28XhsFChtLo%3D
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- ISSN
- 24324701
- 00214434
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可