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dc.contributor.authorSaito, Takeshi
dc.contributor.authorMarioara, Calin Daniel
dc.contributor.authorAndersen, Sigmund Jarle
dc.contributor.authorLefebvre, Williams
dc.contributor.authorHolmestad, Randi
dc.date.accessioned2018-01-03T14:05:45Z
dc.date.available2018-01-03T14:05:45Z
dc.date.created2013-12-13T15:20:56Z
dc.date.issued2014
dc.identifier.citationPhilosophical Magazine. 2014, 94 (5), 520-531.nb_NO
dc.identifier.issn1478-6435
dc.identifier.urihttp://hdl.handle.net/11250/2474411
dc.description.abstractPrecipitates in a lean Al–Mg–Si alloy with low Cu addition (~0.10 wt.%) were investigated by aberration-corrected high angle annular dark field scanning transmission electron microscopy (HAADF-STEM). Most precipitates were found to be disordered on the generally ordered network of Si atomic columns which is common for the metastable precipitate structures. Fragments of known metastable precipitates in the Al–Mg–Si–(Cu) alloy system are found in the disordered precipitates. It was revealed that the disordered precipitates arise as a consequence of coexistence of the Si-network. Cu atomic columns are observed to either in-between the Si-network or replacing a Si-network column. In both cases, Cu is the center in a three-fold rotational symmetry on the Si-network. Parts of unit cells of Q′ phase were observed in the ends of a string-type precipitates known to extend along dislocation lines. It is suggested that the string-types form by a growth as extension of the B′/Q′ precipitates initially nucleated along dislocation lines. Alternating Mg and Si columns form a well-ordered interface structure in the disordered Q′ precipitate. It is identical to the interface of the Q′ parts in the string-type precipitate.nb_NO
dc.language.isoengnb_NO
dc.publisherTaylor & Francisnb_NO
dc.titleAberration-corrected HAADF-STEM investigations of precipitate structures in Al-Mg-Si alloys with low Cu additionsnb_NO
dc.typeJournal articlenb_NO
dc.description.versionsubmittedVersionnb_NO
dc.source.pagenumber520-531nb_NO
dc.source.volume94nb_NO
dc.source.journalPhilosophical Magazinenb_NO
dc.source.issue5nb_NO
dc.identifier.doi10.1080/14786435.2013.857051
dc.identifier.cristin1076662
dc.relation.projectNORTEM: 197405nb_NO
dc.relation.projectNorges forskningsråd: 193619nb_NO
dc.description.localcodeThis is an [Original Manuscript] of an article published by Taylor & Francis in [Philosophical Magazine] on [06 Nov 2013], available at http://www.tandfonline.com/doi/abs/10.1080/14786435.2013.857051nb_NO
cristin.unitcode194,66,20,0
cristin.unitnameInstitutt for fysikk
cristin.ispublishedtrue
cristin.fulltextpreprint
cristin.qualitycode1


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