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dc.contributor.authorSaito, Takeshi
dc.contributor.authorMuraishi, Shinji
dc.contributor.authorMarioara, Calin Daniel
dc.contributor.authorAndersen, Sigmund Jarle
dc.contributor.authorJostein, Røyset
dc.contributor.authorHolmestad, Randi
dc.date.accessioned2018-01-03T14:29:40Z
dc.date.available2018-01-03T14:29:40Z
dc.date.created2013-06-20T14:20:37Z
dc.date.issued2013
dc.identifier.citationMetallurgical and Materials Transactions. A. 2013, 44A (9), 4124-4135.nb_NO
dc.identifier.issn1073-5623
dc.identifier.urihttp://hdl.handle.net/11250/2474420
dc.description.abstractEffects of low Cu additions (≤0.10 wt pct) and 10 pct predeformation before aging on precipitates’ microstructures and types in a 6060 Al-Mg-Si alloy have been investigated using transmission electron microscopy (TEM). It was found that predeformation enhances precipitation kinetics and leads to formation of heterogeneous precipitate distributions along dislocation lines. These precipitates were often disordered. Cu additions caused finer microstructures, which resulted in the highest hardness of materials, in both the undeformed and the predeformed conditions. The introduced predeformation led to microstructure coarsening. This effect was less pronounced in the presence of Cu. The precipitate structure was studied in detail by high-resolution TEM and high angle annular dark-field scanning TEM (HAADF-STEM). The Cu additions did not alter the respective precipitation sequence in either the undeformed or the predeformed conditions, but caused a large fraction of β″ precipitates to be partially disordered in the undeformed conditions. Cu atomic columns were found in all the investigated precipitates, except for perfect β″. Although no unit cell was observed in the disordered precipitates, the presence of a periodicity having hexagonal symmetry along the precipitate length was inferred from the fast Fourier transforms (FFT) of HRTEM images, and sometimes directly observed in filtered HAADF-STEM images.nb_NO
dc.language.isoengnb_NO
dc.publisherSpringer Verlagnb_NO
dc.titleThe Effects of Low Cu Additions and Predeformation on the Precipitation in a 6060 Al-Mg-Si Alloynb_NO
dc.typeJournal articlenb_NO
dc.description.versionsubmittedVersionnb_NO
dc.source.pagenumber4124-4135nb_NO
dc.source.volume44Anb_NO
dc.source.journalMetallurgical and Materials Transactions. Anb_NO
dc.source.issue9nb_NO
dc.identifier.doi10.1007/s11661-013-1754-3
dc.identifier.cristin1035610
dc.relation.projectNorges forskningsråd: 193619nb_NO
dc.relation.projectNORTEM: 197405nb_NO
dc.description.localcodeThis is a pre-print of an article published in [Metallurgical and Materials Transactions A]. The final authenticated version is available online at: https://link.springer.com/article/10.1007%2Fs11661-013-1754-3nb_NO
cristin.unitcode194,66,20,0
cristin.unitnameInstitutt for fysikk
cristin.ispublishedtrue
cristin.fulltextpreprint
cristin.qualitycode2


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