dc.contributor.author | Xu, Zebing | |
dc.contributor.author | Roven, Hans Jørgen | |
dc.contributor.author | Jia, Zhihong | |
dc.date.accessioned | 2018-01-22T10:15:24Z | |
dc.date.available | 2018-01-22T10:15:24Z | |
dc.date.created | 2016-11-16T20:57:25Z | |
dc.date.issued | 2017 | |
dc.identifier.citation | Materials Science & Engineering: A. 2017, 679 379-390. | nb_NO |
dc.identifier.issn | 0921-5093 | |
dc.identifier.uri | http://hdl.handle.net/11250/2478650 | |
dc.description.abstract | Plastic 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.iso | eng | nb_NO |
dc.publisher | Elsevier | nb_NO |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no | * |
dc.title | Effects of cryogenic temperature and pre-stretching on mechanical properties and deformation characteristics of a peak-aged AA6082 extrusion | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | acceptedVersion | nb_NO |
dc.source.pagenumber | 379-390 | nb_NO |
dc.source.volume | 679 | nb_NO |
dc.source.journal | Materials Science & Engineering: A | nb_NO |
dc.identifier.doi | 10.1016/j.msea.2016.10.049 | |
dc.identifier.cristin | 1401195 | |
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.unitcode | 194,66,35,0 | |
cristin.unitname | Institutt for materialteknologi | |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 2 | |