書誌事項
- タイトル別名
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- Superplastic Behavior of Hyper-Eutectic Al-Si P/M Alloys Produced by Centrifugal Atomization Process.
- エンシン フンムホウ ニ ヨル カキョウショウ Al Siケイ P M ゴウキ
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抄録
Rapidly solidified hyper-eutectic Al-25Si and Al-15Si pre-alloy powders have been produced at the cooling rate of 105-104°C/s using a centrifugal atomization process. The powders have been consolidated via hot extrusion with a reduction ratio of 110 at 490°C after vacuum hot pressing. Superplasticity of the P/M extruded bars has been investigated in the temperature range between 350 and 523°C.<br>The values of maximum elongation of Al-25Si and Al-15Si P/M extruded bars are 154% and 307%, respectively. The above P/M extruded bars show the maximum elongation at a temperature just below the solidus line of the Al-Si alloys. A filament-like elongated microstructure is formed on the surface of the P/M extruded bar under the optimum condition of superplastic deformation. The formation of such a microstructure is considered to be based on the grain boundary sliding resulting from superplastic deformation. The elongation of the P/M extruded bar, which was directly extruded without pre-compaction of the powder by vacuum hot pressing, is larger than that of the extruded bar through vacuum hot pressing.
収録刊行物
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- 材料
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材料 44 (500), 608-613, 1995
公益社団法人 日本材料学会
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キーワード
詳細情報 詳細情報について
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- CRID
- 1390001205393555712
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- NII論文ID
- 110002292870
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- NII書誌ID
- AN00096175
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- COI
- 1:CAS:528:DyaK2MXmslehtbY%3D
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- ISSN
- 18807488
- 05145163
- http://id.crossref.org/issn/05145163
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- NDL書誌ID
- 3616349
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可