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dc.contributor.authorMørtsell, Eva Anne
dc.contributor.authorMarioara, Calin Daniel
dc.contributor.authorAndersen, Sigmund Jarle
dc.contributor.authorRingdalen, Inga Gudem
dc.contributor.authorFriis, Jesper
dc.contributor.authorWenner, Sigurd
dc.contributor.authorRøyset, Jostein
dc.contributor.authorReiso, Oddvin
dc.contributor.authorHolmestad, Randi
dc.date.accessioned2020-12-15T10:59:14Z
dc.date.available2020-12-15T10:59:14Z
dc.date.created2017-01-09T13:23:25Z
dc.date.issued2016
dc.identifier.citationJournal of Alloys and Compounds. 2016, 699 235-242.en_US
dc.identifier.issn0925-8388
dc.identifier.urihttps://hdl.handle.net/11250/2719512
dc.description.abstractWe show how replacing a fraction of Mg with Li in a lean Al-Mg-Si alloy gives comparable strength and enhanced temperature stability. Replacing solute with smaller amounts of Cu and Li also improves thermal stability and nearly compensates the strength loss for longer ageing times. The Cu addition was kept at 0.021 at. %, so that the formation of β″ type precipitates was not suppressed. High angle annular dark field scanning transmission electron microscopy (HAADF-STEM) documented Li and Cu causing modest structural changes to the main hardening precipitate, β″. However, density functional theory calculations verified the observation from HAADF-STEM that Li preferentially occupies Mg3 sites in the β″ structure. By substituting some Mg with Li, it is possible to achieve higher strength-to-weight ratios without altering the precipitation sequence of the alloys or sacrificing the hardening potentials.en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.subjectLien_US
dc.subjectDFTen_US
dc.subjectHAADF-STEMen_US
dc.subjectTEMen_US
dc.subjectAl-Mg-Sien_US
dc.titleThe effects and behaviour of Li and Cu alloying agents in lean Al-Mg-Si alloysen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionsubmittedVersionen_US
dc.rights.holderThis is a submitted manuscript of an article published by Elsevier Ltd in Journal of Alloys and Compounds, 23 December 2016.en_US
dc.source.pagenumber235-242en_US
dc.source.volume699en_US
dc.source.journalJournal of Alloys and Compoundsen_US
dc.identifier.doi10.1016/j.jallcom.2016.12.273
dc.identifier.cristin1423392
dc.relation.projectNorges forskningsråd: 219371en_US
dc.relation.projectNorges forskningsråd: 197405en_US
dc.relation.projectNotur/NorStore: NN9158Ken_US
cristin.unitcode7401,80,6,1
cristin.unitcode7401,80,6,6
cristin.unitnameMaterialfysikk, Trh.
cristin.unitnameMaterial- og konstruksjonsmekanikk
cristin.ispublishedtrue
cristin.fulltextpreprint
cristin.qualitycode1


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