dc.contributor.author | Wu, Shenghua | |
dc.contributor.author | Li, Yanjun | |
dc.contributor.author | Roven, Hans Jørgen | |
dc.contributor.author | Liu, gang | |
dc.contributor.author | Sun, Jun | |
dc.date.accessioned | 2022-03-10T14:21:51Z | |
dc.date.available | 2022-03-10T14:21:51Z | |
dc.date.created | 2021-10-22T22:01:58Z | |
dc.date.issued | 2021 | |
dc.identifier.issn | 1359-6462 | |
dc.identifier.uri | https://hdl.handle.net/11250/2984353 | |
dc.description.abstract | Experimental evidence demonstrated that equal channel angular pressing (ECAP) at cryogenic temperature, in comparison with ECAP at room temperature, led to promoted strength-ductility synergy in an Al-2.5wt.%Cu alloy. The simultaneous improvement is related to microstructural hierarchy of multimodal grains, low angle grain boundaries, and inter/intragranular precipitates, which was tuned by aging treatment in match with the low-temperature ECAP. The artificial aging could maintain multimodal grain size distribution, introduce a large number of low angle grain boundaries and produce intragranular precipitates to improve strength/ductility. A minor 0.3wt.% Sc addition was effective in optimizing the precipitations and further boosting the strength/ductility combination. The underlying mechanisms for higher strength and greater ductility were rationalized in terms of the low-temperature ECAP. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Elsevier | en_US |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no | * |
dc.title | Hierarchical structure in Al-Cu alloys to promote strength/ductility synergy | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | acceptedVersion | en_US |
dc.rights.holder | This is the authors' accepted manuscript to an article published by Elsevier. Locked until 24.5.2023 due to copyright restrictions. | en_US |
dc.source.volume | 202 | en_US |
dc.source.journal | Scripta Materialia | en_US |
dc.identifier.doi | 10.1016/j.scriptamat.2021.113996 | |
dc.identifier.cristin | 1947925 | |
dc.relation.project | Norges forskningsråd: 197405 | en_US |
dc.relation.project | Norges forskningsråd: 309584 | en_US |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 2 | |