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Mechanical behaviour of similar and dissimilar AA5182-H111 and AA6016-T4 thin friction stir welds

2009-01Journal article Open access
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dc.contributor.authorLeitão, C.
dc.contributor.authorLeal, Rui
dc.contributor.authorRodrigues, D.M.
dc.contributor.authorLoureiro, A.
dc.contributor.authorVilaça, P.
dc.date.accessioned2025-04-10T10:06:22Z
dc.date.available2025-04-10T10:06:22Z
dc.date.issued2009-01
dc.description.abstractThe tensile behaviour of similar and dissimilar friction stir welds in 1 mm thick sheets of two aluminium alloys (AA5182-H111 and AA6016-T4) is analysed in this paper. The heterogeneity in properties across the welds was studied by performing microhardness tests and microstructural analysis. The tensile tests were performed in samples extracted longitudinal and transverse to the weld direction. It was found that the tensile behaviour of the welds depends mainly on the grain size in the TMAZ, for the AA5182-H111 alloy, and on precipitate distribution, for the AA6016-T4 alloy. In all types of welds, the HAZ preserves the same properties of the base materials. The global mechanical behaviour of the AA5182-H111 similar welds is very similar to that of the base material. However, for the AA6016-T4 similar welds and for the AA6016-T4-AA5182-H111 dissimilar welds a 10-20% strength reduction relative to the base materials and important losses in ductility were reported.eng
dc.description.sponsorshipThe authors are indebted to the Portuguese Foundation for the Science and Technology (FCT) and FEDER for the financial support through the POCI program and to Novelis Switzerland SA for supplying the aluminium sheets.
dc.identifier.citationC. Leitao, R.M. Leal, D.M. Rodrigues, A. Loureiro, P. Vilaça, Mechanical behaviour of similar and dissimilar AA5182-H111 and AA6016-T4 thin friction stir welds, Materials & Design, Volume 30, Issue 1, 2009, Pages 101-108, ISSN 0261-3069, https://doi.org/10.1016/j.matdes.2008.04.045.
dc.identifier.doi10.1016/j.matdes.2008.04.045
dc.identifier.eissn1873-4197
dc.identifier.issn0261-3069
dc.identifier.urihttp://hdl.handle.net/10400.8/12769
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier BV
dc.relation.hasversionhttps://www.sciencedirect.com/science/article/pii/S0261306908001222
dc.relation.ispartofMaterials & Design
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectAluminium alloys
dc.subjectFriction stir welding
dc.subjectTaylor welded blanks
dc.subjectThin sheets
dc.titleMechanical behaviour of similar and dissimilar AA5182-H111 and AA6016-T4 thin friction stir weldseng
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage108
oaire.citation.issue1
oaire.citation.startPage101
oaire.citation.titleWest 86th: A Journal of Decorative Arts, Design History, and Material Culture
oaire.citation.volume30
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
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
relation.isAuthorOfPublication46bc598a-4575-4726-aedf-11a2a2cf771e
relation.isAuthorOfPublication.latestForDiscovery46bc598a-4575-4726-aedf-11a2a2cf771e

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The tensile behaviour of similar and dissimilar friction stir welds in 1 mm thick sheets of two aluminium alloys (AA5182-H111 and AA6016-T4) is analysed in this paper. The heterogeneity in properties across the welds was studied by performing microhardness tests and microstructural analysis. The tensile tests were performed in samples extracted longitudinal and transverse to the weld direction. It was found that the tensile behaviour of the welds depends mainly on the grain size in the TMAZ, for the AA5182-H111 alloy, and on precipitate distribution, for the AA6016-T4 alloy. In all types of welds, the HAZ preserves the same properties of the base materials. The global mechanical behaviour of the AA5182-H111 similar welds is very similar to that of the base material. However, for the AA6016-T4 similar welds and for the AA6016-T4-AA5182-H111 dissimilar welds a 10-20% strength reduction relative to the base materials and important losses in ductility were reported.
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