dc.contributor.author | Liu, Zhibo | |
dc.contributor.author | Lin, Yaojun | |
dc.contributor.author | Yan, Zhigang | |
dc.contributor.author | Liu, Manping | |
dc.contributor.author | Liu, Xiaochun | |
dc.contributor.author | Sun, Jiani | |
dc.contributor.author | Roven, Hans Jørgen | |
dc.date.accessioned | 2023-02-24T15:08:06Z | |
dc.date.available | 2023-02-24T15:08:06Z | |
dc.date.created | 2022-10-17T17:39:35Z | |
dc.date.issued | 2022 | |
dc.identifier.citation | Journal of Alloys and Compounds. 2022, 929 . | en_US |
dc.identifier.issn | 0925-8388 | |
dc.identifier.uri | https://hdl.handle.net/11250/3053995 | |
dc.description.abstract | Al-Mg alloys with high Mg contents have attracted considerable interest given enhanced strength and simultaneously reduced density by high Mg solute concentrations. In the present study, we proposed a strategy of strengthening Al‐10wt%Mg binary alloy via heavy cryogenic rolling at liquid nitrogen temperature. Both cryogenic plastic deformation and a high concentration of Mg solute effectively suppress dynamic recovery during rolling, creating nanoscale and ultra-fine laminated grains containing a high density of dislocations in a nearly single-phase solid solution. The as-rolled Al‐10wt%Mg exhibits an average 0.2% offset tensile yield strength of 619 MPa, and average engineering and true ultimate tensile strengths of 689 and 726 MPa, accompanied by average uniform elongation of 5.3% exceeding the threshold value of 5% required for structural engineering applications. The high strength stems from enhanced solid-solution strengthening of a high concentration of Mg solute, significant grain boundary strengthening of nanoscale and ultra-fine laminated grains, and strong dislocation strengthening. The appreciable ductility can be primarily attributed to a high concentration of Mg solute that can retard dynamic recovery processes during tensile testing by impeding dislocation motion, thus enhancing dislocation accumulation and work-hardening ability. A high concentration of Mg solute combined with cryogenic plastic deformation to a high strain magnitude provides a new avenue to achieve ultrahigh strength and good ductility in non-age-hardened Al-Mg alloys. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Elsevier B. V. | en_US |
dc.title | Achieving ultrahigh strength in binary Al-10Mg alloy through heavy cryogenic rolling | en_US |
dc.title.alternative | Achieving ultrahigh strength in binary Al-10Mg alloy through heavy cryogenic rolling | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.rights.holder | © 2022 Elsevier B.V. All rights reserved. | en_US |
dc.source.volume | 929 | en_US |
dc.source.journal | Journal of Alloys and Compounds | en_US |
dc.identifier.doi | 10.1016/j.jallcom.2022.166931 | |
dc.identifier.cristin | 2062182 | |
dc.source.articlenumber | 166931 | en_US |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |