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.authoridGundogdu Is, Emine/0000-0002-7614-9165
dc.authorwosidGündoğdu İş, Emine/IXD-5493-2023
dc.contributor.authorGuendogdu Is, Emine
dc.contributor.authorYilmaz, Muharrem
dc.date.accessioned2024-06-13T20:18:28Z
dc.date.available2024-06-13T20:18:28Z
dc.date.issued2021
dc.departmentİstanbul Gedik Üniversitesien_US
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.en_US
dc.description.sponsorshipKocaeli University Scientific Research Projects unit [BAP: 2017/119]en_US
dc.description.sponsorshipThis study was supported by Kocaeli University Scientific Research Projects unit with Project No. BAP: 2017/119. Welding processes were carried out at IPG PHOTONICS, some of the mechanical tests were carried out at Istanbul Gedik University Welding Technologies Application and Research Center and some at Gedik Education Foundation Gedik Test Center.en_US
dc.identifier.doi10.2351/7.0000414
dc.identifier.issn1042-346X
dc.identifier.issn1938-1387
dc.identifier.issue4en_US
dc.identifier.scopus2-s2.0-85116518128en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.2351/7.0000414
dc.identifier.urihttps://hdl.handle.net/11501/1387
dc.identifier.volume33en_US
dc.identifier.wosWOS:000701416200003en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherAip Publishingen_US
dc.relation.ispartofJournal of Laser Applicationsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subject6061 T6 Al Alloys Weldingen_US
dc.subjectFiber Laser Weldingen_US
dc.subjectAr-He Shielding Gasen_US
dc.subjectLaser Welding Speeden_US
dc.subjectPorosity Defecten_US
dc.subjectProcess Parametersen_US
dc.subjectMicrostructureen_US
dc.subjectQualityen_US
dc.subjectPenetrationen_US
dc.subjectAlen_US
dc.titleEffects of Ar-He shielding gas mixture on mechanical and metallurgical properties of weld metal in laser welding of 6061 T6 aluminium alloyen_US
dc.typeArticleen_US

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