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ファイル | 記述 | サイズ | フォーマット | |
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j.scriptamat.2022.114503.pdf | 2.4 MB | Adobe PDF | 見る/開く |
タイトル: | Significant Bauschinger effect and back stress strengthening in an ultrafine grained pure aluminum fabricated by severe plastic deformation process |
著者: | Gao, Si https://orcid.org/0000-0002-6430-4172 (unconfirmed) Yoshino, Kota Terada, Daisuke Kaneko, Yoshihisa Tsuji, Nobuhiro https://orcid.org/0000-0002-2132-1327 (unconfirmed) |
著者名の別形: | 高, 斯 吉野, 公太 辻, 伸泰 |
キーワード: | Mechanical properties Bauschinger effect Back stress Ultrafine-grained materials |
発行日: | Apr-2022 |
出版者: | Elsevier BV Acta Materialia Inc. |
誌名: | Scripta Materialia |
巻: | 211 |
論文番号: | 114503 |
抄録: | Bauschinger test in uniaxial tension-compression mode was carried out for the first time on the pure Al specimens having homogeneous ultra-fine grained (UFG) microstructures fabricated by equal-channel angular pressing (ECAP) and subsequent annealing processes. Significant Bauschinger stress (transient softening), Bauschinger energy parameter and their strong dependences on the tensile plastic pre-strain at the very early stage of the tensile deformation were measured in the UFG specimens, in sharp contrast to their coarse-grained (CG) counterpart. The grain size dependence of the Bauschinger effect in pure Al was qualitatively discussed in terms of the back stress arising from the formation of dislocation pile-up against the grain boundary during plastic deformation. |
著作権等: | © 2022 The Authors. Published by Elsevier Ltd on behalf of Acta Materialia Inc. This is an open access article under the CC BY-NC-ND license. |
URI: | http://hdl.handle.net/2433/279062 |
DOI(出版社版): | 10.1016/j.scriptamat.2022.114503 |
出現コレクション: | 学術雑誌掲載論文等 |
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