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dc.contributor.authorXu, Zebing
dc.contributor.authorRoven, Hans Jørgen
dc.contributor.authorJia, Zhihong
dc.date.accessioned2018-01-22T10:15:24Z
dc.date.available2018-01-22T10:15:24Z
dc.date.created2016-11-16T20:57:25Z
dc.date.issued2017
dc.identifier.citationMaterials Science & Engineering: A. 2017, 679 379-390.nb_NO
dc.identifier.issn0921-5093
dc.identifier.urihttp://hdl.handle.net/11250/2478650
dc.description.abstractPlastic deformation studies of a peak-aged AA6082 alloy by means of tensile tests at 77 K and 295 K, and related microstructure characteristics obtained by Scanning Electron Microscopy (SEM), Electron Backscatter Diffraction (EBSD), Transmission Electron Microscopy (TEM) and Atom Force Microscopy (AFM), revealed new results. A simultaneous improvement in ductility and strength occurred at 77 K, but not at 295 K. A higher work hardening accompanied by a more homogeneous slip mode explained the improved properties at 77 K. Pre-stretching at these two temperatures and subsequent tensile testing at room temperature revealed a marked yield point. However, pre-stretching at 77 K exhibited a slightly higher room temperature yield strength and ductility than the condition pre-stretched at 295 K. Annealing after pre-stretching improved ductility and reduced the magnitude of the yield point. Pre-stretching at 77 K and subsequent annealing introduced somewhat higher strength and ductility as compared to the counterpart pre-stretched at 295 K. The observed mechanical behaviour and associated phenomena were directly linked to microstructure characteristics such as deformation substructure history, slip localization, dislocation density and the precipitate β' /β'' ratio.nb_NO
dc.language.isoengnb_NO
dc.publisherElseviernb_NO
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.no*
dc.titleEffects of cryogenic temperature and pre-stretching on mechanical properties and deformation characteristics of a peak-aged AA6082 extrusionnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.source.pagenumber379-390nb_NO
dc.source.volume679nb_NO
dc.source.journalMaterials Science & Engineering: Anb_NO
dc.identifier.doi10.1016/j.msea.2016.10.049
dc.identifier.cristin1401195
dc.description.localcode© 2016. This is the authors’ accepted and refereed manuscript to the article. Locked until 17.10.2018 due to copyright restrictions. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/nb_NO
cristin.unitcode194,66,35,0
cristin.unitnameInstitutt for materialteknologi
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode2


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Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
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