dc.contributor.author | Granum, Henrik Møgster | |
dc.contributor.author | Myhr, Ole Runar | |
dc.contributor.author | Børvik, Tore | |
dc.contributor.author | Hopperstad, Odd Sture | |
dc.date.accessioned | 2021-10-27T08:00:01Z | |
dc.date.available | 2021-10-27T08:00:01Z | |
dc.date.created | 2021-06-28T16:10:25Z | |
dc.date.issued | 2021 | |
dc.identifier.issn | 2352-4928 | |
dc.identifier.uri | https://hdl.handle.net/11250/2825875 | |
dc.description.abstract | The effect of pre-stretching on the mechanical behaviour of the aluminium alloys AA6063, AA6061 and AA6110 in temper T6 has been investigated. Uniaxial tensile tests and quasi-static axial crushing tests were conducted on rectangular hollow section (RHS) profiles pre-stretched 0.5 % and 4.0 % prior to artificial ageing. The stress-strain curves from the uniaxial tensile tests with different pre-stretching levels were used to investigate the effect of pre-stretching on the mechanical behaviour. It was found that the yield stress and ultimate tensile stress were somewhat lower and the failure strain was considerably higher for the profiles pre-stretched 4.0 % compared to those pre-stretched 0.5 %. In the crushing tests, less cracks were generally seen by visual inspection on the profiles pre-stretched 4.0 % but the specific energy absorption was slightly lower for these profiles. The nanostructure model NaMo was used to predict the stress-strain curves and the results were compared to the experimental data. Overall, the experimental trends were accurately predicted by NaMo, even though the hardening stagnation observed predominantly for profiles pre-stretched 4.0 % was not captured. The predicted evolution of the microstructure during artificial ageing was used to gain insight into the physical mechanisms responsible for the observed stress-strain behaviour. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Elsevier | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Effect of pre-stretching on the mechanical behaviour of three artificially aged 6xxx series aluminium alloys | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.source.volume | 27 | en_US |
dc.source.journal | Materials Today Communications | en_US |
dc.identifier.doi | 10.1016/j.mtcomm.2021.102408 | |
dc.identifier.cristin | 1919059 | |
dc.relation.project | Norges forskningsråd: 250553 | en_US |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 1 | |