Effects of Ar-He shielding gas mixture on mechanical and metallurgical properties of weld metal in laser welding of 6061 T6 aluminium alloy

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dc.contributor.authorGündoğdu İş, Emine
dc.contributor.authorYılmaz, Muharrem
dc.date.accessioned2024-06-13T20:18:28Z
dc.date.available2024-06-13T20:18:28Z
dc.date.issued2021
dc.departmentMeslek Yüksekokulu, Gedik Meslek Yüksekokulu, Kaynak Teknolojisi Programı
dc.description.abstractIn this study, a 6 mm-thick 6061 T6 aluminum alloy was welded using fiber laser welding, and its mechanical and metallurgical properties were investigated. Full penetration autogenous welds were made at a constant laser power of 4.95 kW using a continuous-wave fiber laser and focal positions of -4 mm. In addition, the shielding gas content was changed for weldments welded at different travel speeds (mm s(-1)). Accordingly, welding speeds were 50, 40, 35, 25, and 20 mm s(-1), and the shielding gas contents were 100% argon (Ar), 10% helium (He) + 90% Ar, 30% He + 70% Ar, 50% He + 50% Ar, and 75% He + 25% Ar. Then, macro and micro images were taken, and some mechanical properties (hardness, tensile test, and bending test) were examined. As a result, the change in shielding gas content and welding speed has provided significant variations in the welding joints. Decreases in mechanical properties were detected due to the coarsening of the precipitates. On the other hand, the narrowness of the weld seam and HAZ obtained in laser welding, compared to traditional welding methods, minimizes this disadvantage.
dc.description.sponsorshipKocaeli University
dc.identifier.doi10.2351/7.0000414
dc.identifier.issn1042-346X
dc.identifier.issn1938-1387
dc.identifier.issue4
dc.identifier.scopus2-s2.0-85116518128
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.2351/7.0000414
dc.identifier.urihttps://hdl.handle.net/11501/1387
dc.identifier.volume33
dc.identifier.wosWOS:000701416200003
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorGündoğdu İş, Emine
dc.institutionauthorid0000-0002-7614-9165
dc.language.isoen
dc.publisherAIP Publishing
dc.relation.ispartofJournal of Laser Applications
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subject6061 T6 Al Alloys Welding
dc.subjectFiber Laser Welding
dc.subjectAr-He Shielding Gas
dc.subjectLaser Welding Speed
dc.subjectPorosity Defect
dc.titleEffects of Ar-He shielding gas mixture on mechanical and metallurgical properties of weld metal in laser welding of 6061 T6 aluminium alloy
dc.typeArticle

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