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dc.contributor.authorJia, Hailong
dc.contributor.authorMarthinsen, Knut
dc.contributor.authorLi, Yanjun
dc.date.accessioned2017-10-04T08:26:52Z
dc.date.available2017-10-04T08:26:52Z
dc.date.created2017-01-09T18:05:05Z
dc.date.issued2017
dc.identifier.citationMaterials Science Forum. 2017, 879 843-848.nb_NO
dc.identifier.issn0255-5476
dc.identifier.urihttp://hdl.handle.net/11250/2458248
dc.description.abstractAn ECAP (equal channel angular pressing) processed UFG Al-5Cu alloy was characterized by electron backscatter diffraction (EBSD). It is revealed that a bimodal grain structure, i.e. ultrafine grains accompanied by micron-sized grains was developed after 4 passes. A high strength (~501 MPa) and a relatively large elongation to failure (~28%) with ~5% uniform elongation were achieved simultaneously after four passes of ECAP. The high strength is due to a combination of strengthening by solute, high dislocation density and ultrafine grains. The enhancement of uniform elongation is primarily due to the enhanced work hardening resulted from the solute Cu content and the bimodal grain structure. The large post-uniform elongation is attributed to the high strain rate sensitivity of the UFG Al-5Cu alloy. More importantly, the present work revealed that during ECAP high solid solution content of Cu and coarse secondary phase particles can introduce inhomogeneous deformation resulting in a desirable bimodal grain structure, which can be utilized as a strategy to gain both high strength and relatively good ductility.nb_NO
dc.language.isoengnb_NO
dc.publisherTrans Tech Publicationsnb_NO
dc.titleAl-5Cu alloy processed by equal-channel angular pressingnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.source.pagenumber843-848nb_NO
dc.source.volume879nb_NO
dc.source.journalMaterials Science Forumnb_NO
dc.identifier.doi10.4028/www.scientific.net/MSF.879.843
dc.identifier.cristin1423758
dc.relation.projectNorges forskningsråd: 222173nb_NO
dc.description.localcodeThis is the authors’ accepted and refereed manuscript to the article. LOCKED until 4.10.2217 due to copyright restrictions.nb_NO
cristin.unitcode194,66,35,0
cristin.unitnameInstitutt for materialteknologi
cristin.ispublishedtrue
cristin.fulltextpreprint
cristin.qualitycode1


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