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dc.contributor.authorMørtsell, Eva Anne
dc.contributor.authorAndersen, Sigmund Jarle
dc.contributor.authorFriis, Jesper
dc.contributor.authorMarioara, Calin Daniel
dc.contributor.authorHolmestad, Randi
dc.date.accessioned2020-12-16T12:32:32Z
dc.date.available2020-12-16T12:32:32Z
dc.date.created2017-02-14T14:38:47Z
dc.date.issued2017
dc.identifier.citationPhilosophical Magazine. 2017, 97 (11), 851-866.en_US
dc.identifier.issn1478-6435
dc.identifier.urihttps://hdl.handle.net/11250/2719824
dc.description.abstractBonding energies and volume misfits for alloying elements and vacancies in multicomponent Al–Mg–Si alloys have been calculated using density functional theory (DFT). A detailed atomic scale analysis has been done for characteristic precipitate structures, using high-angle annular dark-field scanning transmission electron microscopy. Two new stacking configurations of the important strengthening phase β′′ were discovered in the Ge-added alloy. All three stacking variations were found to be energetically favourable to form from DFT calculations. The second stacking configuration, β2′′, contains vacated columns in its unit cell, consequently requiring less solute to create the same volume fraction of precipitate needles. DFT suggests a lower formation enthalpy per atom for β2′′ when Si is exchanged with Ge. In the alloy containing Ag additions, a new Q’/C-like local configuration containing Ag instead of Cu was discovered, also this phase was deemed energetically favourable from DFT.en_US
dc.language.isoengen_US
dc.publisherTaylor & Francisen_US
dc.subjectcrystal structureen_US
dc.subjectnanoscale precipitatesen_US
dc.subjectSi/Geen_US
dc.subjectdensity-functional theoryen_US
dc.subjectHAADF-STEMen_US
dc.subjectAluminium alloysen_US
dc.titleAtomistic details of precipitates in lean Al–Mg–Si alloys with trace additions of Ag and Ge studied by HAADF-STEM and DFTen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionacceptedVersionen_US
dc.rights.holderThis is an Accepted Manuscript of an article published by Taylor & Francis in Philosophical Magazine on 08 Feb 2017, available online:https://www.tandfonline.com/doi/full/10.1080/14786435.2017.1281461en_US
dc.source.pagenumber851-866en_US
dc.source.volume97en_US
dc.source.journalPhilosophical Magazineen_US
dc.source.issue11en_US
dc.identifier.doi10.1080/14786435.2017.1281461
dc.identifier.cristin1450441
dc.relation.projectNotur/NorStore: NN9158Ken_US
dc.relation.projectNotur/NorStore: NN8068Ken_US
dc.relation.projectNorges forskningsråd: 197405en_US
cristin.unitcode7401,80,6,1
cristin.unitnameMaterialfysikk, Trh.
cristin.ispublishedtrue
cristin.fulltextpreprint
cristin.qualitycode1


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