Effect of surface roughness on weldability in aluminium sheets joined by cold pressure welding

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dc.contributor.authorSahin, Mumin
dc.date.accessioned2024-06-12T11:17:16Z
dc.date.available2024-06-12T11:17:16Z
dc.date.issued2008
dc.departmentTrakya Üniversitesien_US
dc.description.abstractPurpose - The purpose of this paper is to examine the effects of the welding deformation and surface roughness in cold pressure welding on the tensile strength and the fatigue strength of joined sheets. Additionally, the paper seeks to analyse the hardness variations and microstructures at the welding interface. Design/methodology/approach - Cold pressure welding is a method of joining similar or dissimilar ductile metals. it can be applied by bringing into close contact the surfaces of virgin metal specimens that appear due to the breakdown of the surface layers caused by bulk plastic deformation. Cold pressure welding is applied to test parts without too long a delay after the preparation of surfaces. The application of welding in 10 min affects importantly the weld strength. As this time is increased, the weld strength of the joints is decreased. The determination of deformation amount is found by determination of the reduction (R) at the total thickness of the two parts after the welding process. Findings - The weld strength increases as the surface roughness and weld deformation of the joined sheets increase. The length of bond zones increases with increasing deformation. Therefore, the weld strength of parts depends on the length of bond zones. Then, there is an effect of surface roughness on the welding strength. Joined sheets show resistance to little fluctuating tensile stress. It is observed that the parts rupture from the welding-interface hardness values are about the same at interfaces of sheets having different surface roughness and equal deformation (60 per cent). But, if it is considered that hardness of aluminium material purchased is about 53 HV, it can be said that the hardness increases in joined parts because of local hardening during deformation in cold pressure welding method as lap welding. Bond formation at interfaces of joined sheets having R-a = 5 mu m surface roughness and deformation ratio 60 per cent is shown to be successful in the microstructure photo. Research limitations/implications - Surface roughness and deformation values can be increased in further studies. Originality/value - The paper offers insight into the effects of surface roughness on weldability.en_US
dc.identifier.doi10.1108/00368790810895187
dc.identifier.endpage254en_US
dc.identifier.issn0036-8792
dc.identifier.issue5en_US
dc.identifier.scopus2-s2.0-50849110468en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage249en_US
dc.identifier.urihttps://doi.org/10.1108/00368790810895187
dc.identifier.urihttps://hdl.handle.net/20.500.14551/24639
dc.identifier.volume60en_US
dc.identifier.wosWOS:000259519900007en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherEmerald Group Publishing Limiteden_US
dc.relation.ispartofIndustrial Lubrication And Tribologyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectWeldingen_US
dc.subjectCold Weldingen_US
dc.subjectTensile Strengthen_US
dc.subjectCopperen_US
dc.subjectSteelen_US
dc.subjectStateen_US
dc.titleEffect of surface roughness on weldability in aluminium sheets joined by cold pressure weldingen_US
dc.typeArticleen_US

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