Gas tungsten arc welding of 7075 aluminum alloy: microstructure properties, impact strength, and weld defects

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dc.contributor.authorÇevik, Bekir
dc.date.accessioned2020-05-01T12:10:09Z
dc.date.available2020-05-01T12:10:09Z
dc.date.issued2018
dc.departmentDÜ, Gümüşova Meslek Yüksekokulu, Makine ve Metal Teknolojileri Bölümüen_US
dc.descriptionWOS: 000436820200005en_US
dc.description.abstractPrecipitation-hardened 7075 (Al-Zn-Mg-Cu) aluminum alloys have low specific density and high strength. Because of these advantages, they are commonly used as construction materials in the aerospace industries. Even though they have such important and common areas of usage, their weldability is quite difficult. It is important to weld this alloy used in these industrial areas. In this study, 3 mm-thick 7075-T651 aluminum alloy materials were joined using different welding currents via gas tungsten arc welding (GTAW) method. The metallographic examinations were carried out to determine macrostructural and microstructural properties of the weld zones. Also, notch impact and hardness tests were performed to determine the mechanical properties of the welded samples. The results obtained as a result of the tests were evaluated and interpreted. The grain size of the weld center increased due to heat input occurring with increase of the welding current. Micro cracks (hot cracking) occurred in the roots of welding seams. The increase in the welding current affected the hardness distribution of the weld zone. The impact strength of the welded sample was negatively affected by the grain coarsening and micro cracks in the welding seam.en_US
dc.description.sponsorshipDuzce University Research FundDuzce University [2018.24.03.713]en_US
dc.description.sponsorshipThis project was supported by Duzce University Research Fund Project Number: 2018.24.03.713.en_US
dc.identifier.doi10.1088/2053-1591/aacbbcen_US
dc.identifier.issn2053-1591
dc.identifier.issue6en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.1088/2053-1591/aacbbc
dc.identifier.urihttps://hdl.handle.net/20.500.12684/6039
dc.identifier.volume5en_US
dc.identifier.wosWOS:000436820200005en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherIop Publishing Ltden_US
dc.relation.ispartofMaterials Research Expressen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subject7075 aluminum alloyen_US
dc.subjectGTAWen_US
dc.subjectmicrostructureen_US
dc.subjectimpact strengthen_US
dc.subjectweld defectsen_US
dc.titleGas tungsten arc welding of 7075 aluminum alloy: microstructure properties, impact strength, and weld defectsen_US
dc.typeArticleen_US

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