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- 古井 光明
- 富山大学工学部物質生命システム工学科
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- Xu Cheng
- Departments of Aerospace & Mechanical Engineering and Materials Science, University of Southern California
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- 曾田 哲夫
- 富山大学工学部機械知能システム工学科
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- 井上 誠
- 富山工業高等専門学校環境材料工学科
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- 穴田 博
- 富山大学工学部物質生命システム工学科
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- Langdon Terence G.
- Departments of Aerospace & Mechanical Engineering and Materials Science, University of Southern California
書誌事項
- タイトル別名
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- Superplasticity in a Mg-8 mass%Li Two-Phase Alloy Processed by an ECAP Method
- ECAP加工を施したMg-8 mass%Li2相合金の超塑性
- ECAP カコウ オ ホドコシタ Mg 8 massパーセントLi2 ソウ ゴウキン ノ チョウソセイ
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抄録
Significant phase refinement and dispersion were achieved in a cast Mg-8 mass%Li alloy through processing by equal-channel angular pressing (ECAP) using a die having an internal channel angle of 110° and a pressing temperature of 473 K. Following extrusion and subsequent ECAP through 2 passes, the alloy exhibited superplasticity over the temperature range from 423 to 473 K. A maximum fracture elongation of >950% was attained at 473 K with an initial strain rate of 1.0×10-4 s-1. The measured strain rate sensitivity was of the order of 0.6. The maximum elongation is high in comparison with other Mg alloys tested in tension at the same temperature and strain rate. The activation energy for superplastic flow was essentially equal to the value for grain boundary diffusion of Mg. The use of ECAP gives a significant improvement in strength and ductility at room temperature.<br>
収録刊行物
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- 日本金属学会誌
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日本金属学会誌 70 (9), 729-734, 2006
公益社団法人 日本金属学会
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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
- 1390282681456637056
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- NII論文ID
- 10018249582
- 130004455757
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- NII書誌ID
- AN00187860
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- ISSN
- 18806880
- 24337501
- 00214876
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- NDL書誌ID
- 8524494
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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
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可