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dc.contributor.authorThronsen, Elisabeth
dc.contributor.authorMarioara, Calin Daniel
dc.contributor.authorSunde, Jonas Kristoffer
dc.contributor.authorMinakuchi, Kazuhiro
dc.contributor.authorKatsumi, Tetsuya
dc.contributor.authorErga, Iven
dc.contributor.authorAndersen, Sigmund Jarle
dc.contributor.authorFriis, Jesper
dc.contributor.authorMarthinsen, Knut
dc.contributor.authorMatsuda, Kenji
dc.contributor.authorHolmestad, Randi
dc.description.abstractThis work has investigated the effect of the combination of natural ageing and 80% pre-deformation after solution heat treatment on precipitation during subsequent artificial ageing in an Al-1.3Cu-1.0Mg-0.4Si wt.% alloy. It was found that a combined use of atomic resolution aberration corrected high-angle annular dark-field scanning transmission electron microscopy and scanning precession electron diffraction enabled a detailed characterisation of precipitates in heavy pre-deformed materials. The dominant phase in the undeformed condition was the L phase. L was also found to be nucleated in the undistorted regions of the Al matrix in the pre-deformed conditions. Two phases with high aspect ratios were nucleated on dislocations: The C phase and a previously reported phase, which we named here the ‘E phase’. The crystal structure of E was solved experimentally as monoclinic with core composition Mg6Al2Si2Cu4, supported by density functional theory calculations. It was determined that the order of pre-deformation and natural ageing had an influence on the relative fractions of the aforementioned phases formed during artificial ageing. An increased fraction of C+E relative to L was found in the condition where the pre-deformation was applied after natural ageing as compared to the condition where the pre-deformation was applied before natural ageing.en_US
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.subjectAl-Mg-Si-Cu alloysen_US
dc.subjectNatural ageingen_US
dc.subjectScanning precessionen_US
dc.subjectElectron diffractionen_US
dc.subjectTransmission electron microscopyen_US
dc.titleThe effect of heavy deformation on the precipitation in an Al-1.3Cu-1.0Mg-0.4Si wt.% alloyen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.rights.holder2019 The Authorsen_US
dc.source.journalMaterials & designen_US
dc.relation.projectNorges forskningsråd: 249698en_US
dc.relation.projectNorges forskningsråd: 197405en_US
dc.relation.projectNorges teknisk-naturvitenskapelige universitet: Digital Transformationen_US
dc.relation.projectNorges teknisk-naturvitenskapelige universitet: DIGITAL TRANSFORMATIONen_US
cristin.unitnameMaterialer og nanoteknologi

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Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal