dc.contributor.author | Sunde, Jonas Kristoffer | |
dc.contributor.author | Johnstone, D.N. | |
dc.contributor.author | Wenner, Sigurd | |
dc.contributor.author | Van Helvoort, Antonius | |
dc.contributor.author | Midgley, Paul A. | |
dc.contributor.author | Holmestad, Randi | |
dc.date.accessioned | 2020-12-30T11:07:29Z | |
dc.date.available | 2020-12-30T11:07:29Z | |
dc.date.created | 2019-01-02T10:25:20Z | |
dc.date.issued | 2018 | |
dc.identifier.issn | 1359-6454 | |
dc.identifier.uri | https://hdl.handle.net/11250/2721118 | |
dc.description.abstract | T-(Al20Cu2Mn3) phase dispersoids are important for limiting recovery and controlling grain growth in Al-Cu alloys. However, these dispersoids can also reduce precipitation hardening by acting as heterogeneous nucleation sites and may lead to increased susceptibility towards pitting corrosion when galvanically coupled with S-(Al2CuMg) phase precipitates. The interplay between T- and S-phases is therefore important for understanding their effect on the mechanical and electrochemical properties of Al-Cu-Mg alloys. Here, the crystallographic relationships between the T-phase, S-phase, and surrounding Al matrix were investigated in an Al-1.31Cu-1.14Mg-0.13Ag-0.10Fe-0.28Mn (at.%) alloy by combining scanning precession electron diffraction with misorientation analysis in 3-dimensional axis-angle space and high-resolution transmission electron microscopy. Orientation relationships are identified between all three phases, revealing S-T orientation relationships for the first time. Differences in S-Al orientation relationships for precipitates formed at T phase interfaces compared to their non-interfacial counterparts were also identified. These insights provide a comprehensive assessment of the crystallographic relationships in T-/S-phase aggregates, which may guide future alloy design. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Elsevier | en_US |
dc.relation.uri | https://doi.org/10.1016/j.actamat.2018.12.036 | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no | * |
dc.subject | Scanning precession electron diffraction | en_US |
dc.subject | ACOM-TEM | en_US |
dc.subject | Dispersoid-precipitate aggregate | en_US |
dc.subject | Orientation relationships | en_US |
dc.subject | Aluminium alloy | en_US |
dc.title | Crystallographic relationships of T-/S-phase aggregates in an Al–Cu–Mg–Ag alloy | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | acceptedVersion | en_US |
dc.rights.holder | © 2019. This is the authors’ accepted and refereed manuscript to the article. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | en_US |
dc.source.pagenumber | 587-596 | en_US |
dc.source.volume | 166 | en_US |
dc.source.journal | Acta Materialia | en_US |
dc.identifier.doi | 10.1016/j.actamat.2018.12.036 | |
dc.identifier.cristin | 1648267 | |
dc.relation.project | Norges forskningsråd: 197405 | en_US |
dc.relation.project | Norges forskningsråd: 247783 | en_US |
cristin.unitcode | 7401,80,64,0 | |
cristin.unitname | Materialer og nanoteknologi | |
cristin.ispublished | false | |
cristin.fulltext | postprint | |
cristin.qualitycode | 2 | |