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Nugget Formation and Mechanical Behaviour of Friction Stir Welds of Three Dissimilar Aluminum Alloys

2020Journal article Open access
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dc.contributor.authorManuel, Neves
dc.contributor.authorGalvão, Ivan
dc.contributor.authorLeal, Rui M.
dc.contributor.authorCosta, José D.
dc.contributor.authorLoureiro, Altino
dc.date.accessioned2021-03-24T16:32:31Z
dc.date.available2021-03-24T16:32:31Z
dc.date.issued2020
dc.description.abstractThe aim of this research was to investigate the influence of the properties of the base materials and welding speed on the morphology and mechanical behavior of the friction stir welds of three dissimilar aluminum alloys in a T-joint configuration. The base materials were the AA2017-T4, AA5083-H111, and AA6082-T6 alloys in 3 mm-thick sheets. The AA6082-T6 alloy was the stringer, and the other alloys were located either on the advancing or retreating sides of the skin. All the T-joint welds were produced with a constant tool rotation speed but with different welding speeds. The microstructures of the welds were analyzed using optical microscopy, scanning electron microscopy with energy dispersive spectroscopy, and the electron backscatter diffraction technique. The mechanical properties were assessed according to micro-hardness, tensile, and fatigue testing. Good quality welds of the three dissimilar aluminum alloys could be achieved with friction stir welding, but a high ratio between the tool's rotational and traverse speeds was required. The welding speed influenced the weld morphology and fatigue strength. The positioning of the skin materials influenced the nugget morphology and the mechanical behavior of the joints. The joints in which the AA2017 alloy was positioned on the advancing side presented the best tensile properties and fatigue strength.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.3390/ma13112664pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.8/5533
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.relationCentre for Mechanical Enginnering, Materials and Processes
dc.relation.publisherversionhttps://www.mdpi.com/1996-1944/13/11/2664pt_PT
dc.subjectFriction stir weldingpt_PT
dc.subjectThree dissimilar aluminum alloyspt_PT
dc.subjectWelding speedpt_PT
dc.subjectT-jointspt_PT
dc.subjectMicrostructurept_PT
dc.subjectMechanical propertiespt_PT
dc.titleNugget Formation and Mechanical Behaviour of Friction Stir Welds of Three Dissimilar Aluminum Alloyspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCentre for Mechanical Enginnering, Materials and Processes
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00285%2F2020/PT
oaire.citation.issue11pt_PT
oaire.citation.startPage2664pt_PT
oaire.citation.titleMaterialspt_PT
oaire.citation.volume13pt_PT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameLeal
person.givenNameRui
person.identifier.ciencia-id001C-1230-7699
person.identifier.orcid0000-0001-6416-0191
person.identifier.ridF-4418-2017
person.identifier.scopus-author-id18434853300
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication46bc598a-4575-4726-aedf-11a2a2cf771e
relation.isAuthorOfPublication.latestForDiscovery46bc598a-4575-4726-aedf-11a2a2cf771e
relation.isProjectOfPublication0a3418ca-35b9-4670-a826-154cceca5a89
relation.isProjectOfPublication.latestForDiscovery0a3418ca-35b9-4670-a826-154cceca5a89

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