2026-03-12T16:30:17Z https://kanazawa-u.repo.nii.ac.jp/oai

oai:kanazawa-u.repo.nii.ac.jp:00009803 2024-06-20T06:18:39Z 934:935:936

Al-Zn-Mg-Cu系合金の強化機構に対する実験的検討 Experimental Study on Strengthening Mechanism of Al-Zn-Mg-Cu System Alloy 松岡, 秀明 20019425 広瀬, 幸雄 岸, 陽一 東, 健司 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 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. 金沢大学大学院自然科学研究科 日本材料学会 1997-06-15 2017-10-03 jpn journal article VoR http://hdl.handle.net/2297/12323 https://kanazawa-u.repo.nii.ac.jp/records/9803 http://ci.nii.ac.jp/naid/110002293330/ AN00096175 0514-5163 材料=Journal of the Society of Materials Science, Japan 46 6 665 670 https://kanazawa-u.repo.nii.ac.jp/record/9803/files/TE-PR-HIROSE-Y-665.pdf application/pdf 822.5 kB 2017-10-03