Friction Stir Spot Weldability of AA7075-T6 Sheets with a Pinless Tool Providing Enhanced Stirring Effect

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dc.contributor.authorCakan, Betul Gulcimen
dc.contributor.authorTuncel, Oguz
dc.contributor.authorTutar, Mumin
dc.date.accessioned2024-12-24T19:24:54Z
dc.date.available2024-12-24T19:24:54Z
dc.date.issued2024
dc.departmentSiirt Üniversitesi
dc.description.abstractThe automotive and aerospace industries have explored alternative welding methods, such as friction stir welding (FSW) and its derivation, friction stir spot welding (FSSW). Welding parameters and tool shoulder designs influence material flow dynamics and stirring during the FSSW process. The current study uses a newly manufactured pinless tool to focus on the FSSW of 3-mm-thick AA7075-T6 aluminum sheets, which were joined using a pinless tool with a concave shape of three grooves for improved flow characteristics. The experiments explore the impact of welding parameters on the weld quality. Tensile tests, macroscopic examination, fracture surface analysis, and microhardness tests were performed. The geometric characteristics of hook shape and effective weld width substantially affected the tensile shear load (TSL). Tensile test findings and changes in effective weld width with welding parameters reveal that low rotational speed, high penetration depth, and dwell time parameters can result in a high TSL. Microhardness profiles reveal that the stir zone (SZ) exhibits the highest hardness values, reaching 27% above the base material hardness. The heat-affected zone (HAZ) shows the lowest hardness values. Fracture surface morphology analysis reveals different fracture modes in high and low TSL specimens.
dc.identifier.doi10.1007/s11837-024-07005-3
dc.identifier.issn1047-4838
dc.identifier.issn1543-1851
dc.identifier.scopus2-s2.0-85209069940
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1007/s11837-024-07005-3
dc.identifier.urihttps://hdl.handle.net/20.500.12604/6184
dc.identifier.wosWOS:001354804400001
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofJom
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241222
dc.titleFriction Stir Spot Weldability of AA7075-T6 Sheets with a Pinless Tool Providing Enhanced Stirring Effect
dc.typeArticle

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