Effect of growth velocity on microstructure and mechanical properties of directionally solidified 7075 alloy

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dc.authoridBuyuk, Ugur/0000-0002-6830-8349
dc.contributor.authorCadirli, Emin
dc.contributor.authorNergiz, Emel
dc.contributor.authorKaya, Hasan
dc.contributor.authorBuyuk, Ugur
dc.contributor.authorSahin, Mevlut
dc.contributor.authorGunduz, Mehmet
dc.date.accessioned2024-11-07T13:32:06Z
dc.date.available2024-11-07T13:32:06Z
dc.date.issued2020
dc.departmentNiğde Ömer Halisdemir Üniversitesi
dc.description.abstract7075 alloys were prepared using metals of 99.99% high purity in the vacuum atmosphere. These alloys were directionally solidified upwards under various growth velocities (8.3-166.0 mu m/s) using a Bridgman-type directional solidification furnace. Dendritic spacings (lambda(1), lambda(2)) and microhardness (HV) were measured from both longitudinal and transverse sections of the samples. Ultimate tensile strength (sigma(U)) and yield strength (sigma(y)) of the solidified samples at room temperature were examined. The HV increased from 75.2 to 112.8 MPa, the sigma(U) increased from 155.8 to 210.1 MPa, and the sigma(y) increased from 198.4 to 319.8 MPa with increasing growth velocity from 8.3 to 166.0 mu m/s. Exponent values of the V for the lambda(1), lambda(2), HV, sigma(U) and sigma(y) were calculated as 0.27, 0.41, 0.05, 0.11 and 0.15, respectively. The results show that the hot tearing in the 7075 alloy is caused by the fracture of dendrites structures.
dc.description.sponsorshipNide omer Halisdemir University Scientific Research Project Unit [FEB 2016/08]
dc.description.sponsorshipThis project was supported by Nide omer Halisdemir University Scientific Research Project Unit Contract No: FEB 2016/08. The authors are grateful to Nide omer Halisdemir University Scientific Research Project Unit for their financial support.
dc.identifier.doi10.1080/13640461.2020.1738131
dc.identifier.endpage23
dc.identifier.issn1364-0461
dc.identifier.issn1743-1336
dc.identifier.issue1
dc.identifier.scopus2-s2.0-85081250654
dc.identifier.scopusqualityQ2
dc.identifier.startpage11
dc.identifier.urihttps://doi.org/10.1080/13640461.2020.1738131
dc.identifier.urihttps://hdl.handle.net/11480/15226
dc.identifier.volume33
dc.identifier.wosWOS:000518513400001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherTaylor & Francis Ltd
dc.relation.ispartofInternational Journal of Cast Metals Research
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241106
dc.subject7075 alloy
dc.subjectdendritic spacings
dc.subjectmicrohardness
dc.subjectultimate tensile strength
dc.subjectyield strength
dc.titleEffect of growth velocity on microstructure and mechanical properties of directionally solidified 7075 alloy
dc.typeArticle

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