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タイトル: Al-Zn-Mg-Cu系合金の強化機構に対する実験的検討
その他のタイトル: Experimental Study on Strengthening Mechanism of Al-Zn-Mg-Cu System Alloy
著者: 松岡, 秀明
広瀬, 幸雄 link image
岸, 陽一
東, 健司
Matsuoka, Hideaki
Hirose, Yukio
Kishi, Yoichi
Higashi, Kenji
発行日: 1997年 6月15日
出版社(者): 日本材料学会
雑誌名: 材料=Journal of the Society of Materials Science, Japan
ISSN: 0514-5163
巻: 46
号: 6
開始ページ: 665
終了ページ: 670
キーワード: Tensile property
0.2% proof stress
Strengthening mechanism
Hall-Petch's relation
Grain structure
抄録: The strengthening of Al-Zn-Mg-Cu system alloy results from the interaction between dislocation and solute atoms or precipitates. In this study, the tensile properties of 7475 aluminum alloys having various average grain sizes were evaluated. The 0.2% proof stress and elongation were discussed based on the theory of dislocation mechanism and the observation of microstructures. The main results obtained were as follows: (1) The 0.2% proof stress, tensile strength and elongation of the materials increased with decreasing average grain size. (2) In accordance with the Hall-Petch's relation, the 0.2% proof stress was plotted against the reciprocal square root of the average grain size of the aluminum matrix. A good correlation was obtained, indicating that the 0.2% proof stress depends on the average grain size of the aluminum matrix. (3) The contributions of the precipitation strengthening, solid strengthening, solid strengthening and grain refining effect to the 0.2% proof stress of the present 7475 aluminum alloy were estimated to be 258, 153 and 5 MPa, respectively.
URI: http://hdl.handle.net/2297/12323
関連URI: http://ci.nii.ac.jp/naid/110002293330/
資料種別: Journal Article
権利関係: 日本材料学会;本文データは日本材料学会の許諾に基づきCiNiiから複製したものである
版表示: publisher

このアイテムを引用あるいはリンクする場合は次の識別子を使用してください。 http://hdl.handle.net/2297/12323



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