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dc.contributor.authorTognan, Alessandro
dc.contributor.authorSandnes, Lise
dc.contributor.authorTotis, Giovanni
dc.contributor.authorSortino, Marco
dc.contributor.authorBerto, Filippo
dc.contributor.authorGrong, Øystein
dc.contributor.authorSalvati, Enrico
dc.date.accessioned2022-03-31T06:31:25Z
dc.date.available2022-03-31T06:31:25Z
dc.date.created2022-01-17T09:57:50Z
dc.date.issued2022
dc.identifier.issn0020-7403
dc.identifier.urihttps://hdl.handle.net/11250/2988687
dc.description.abstractHybrid metal and extrusion bonding (HYB) is an emerging solid-state welding technique that was developed about ten years ago. HYB exploits the fundamental idea of the well-established friction stir welding (FSW) technology, but a filler material is employed to enhance control of the microstructure and the mechanical properties of the joint. HYB and FSW allow joining to be performed at lower temperatures than classical fusion welding methods. Still, thermal gradient effects seem impossible to be entirely avoided, thus leading to residual stress within the weld region and neighbouring material. Although the FSW-induced residual stress evaluation has been extensively studied and understood, the evaluation and interpretation of HYB-induced residual stress have not been tackled so far. In the present paper, a quantitative investigation on residual stress and its origin in HYB was carried out for the first time. Specifically, a 4 mm thick AA6082-T6 HYB and a 4 mm thick AA6082-T6 FSW butt welds were considered. For the particular case of HYB, an AA6082-T4 was used as the filler material. In both cases, the full-field longitudinal residual stress was experimentally assessed using the Contour Method. The results showed that the HYB joint yields a higher magnitude of tensile residual stress compared to that of the FSW counterpart. A physical explanation for this difference in magnitude was attributed to the lower yield stress point exhibited by the filler material. Furthermore, the analysis revealed peak values of residual stress as high as 205±25 MPa and 165±15 MPa, for the HYB and FSW joint, respectively. Despite this, a similar distribution of residual stress across the weld was observed in both cases. An additional qualitative analysis on the transverse distortion of the welds outlined a pronounced undesired “V-like” deformation of the HYB joint of approximately 1.4°. By contrast, the FSW joint seemed not to show any perceptible bend.en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.titleEvaluation and Origin of Residual Stress in Hybrid Metal and Extrusion Bonding and Comparison with Friction Stir Weldingen_US
dc.typeJournal articleen_US
dc.typePeer revieweden_US
dc.description.versionacceptedVersionen_US
dc.rights.holderThis article will not be available until15 March 2024 due to publisher embargo - © 2022. This manuscript version is made available under the CC-BY-NC-ND 4.0 licenseen_US
dc.source.journalInternational Journal of Mechanical Sciencesen_US
dc.identifier.doihttps://doi.org/10.1016/j.ijmecsci.2022.107089
dc.identifier.cristin1982241
dc.relation.projectNorges forskningsråd: 314063en_US
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode1


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