Design of Novel Non-equiatomic Cu-Ni-Al-Ti Composite Medium-Entropy Alloys

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dc.contributor.authorPolat, Gokhan
dc.contributor.authorErdal, Ziya Anil
dc.contributor.authorKalay, Yunus Eren
dc.date.accessioned2024-02-23T13:59:40Z
dc.date.available2024-02-23T13:59:40Z
dc.date.issued2020
dc.departmentNEÜen_US
dc.description.abstractThere has been great attention on high-entropy alloys (HEAs) over the past decade. Unlike conventional alloy systems, HEAs commonly include at least five principal elements with equiatomic or near-equiatomic ratio. HEAs with their superior mechanical, magnetic, and thermal properties are promising materials for critical engineering applications. Medium-entropy alloys (MEAs), which consist of less than five principal elements, have very similar structural features with HEAs such as robust thermodynamic stability and exceptional mechanical performance. The insights of MEAs have not been fully revealed yet. In the present study, novel MEAs (Cu20Ni20Al30Ti30, Cu25Ni25Al25Ti25, Cu34Ni22Al22Ti22, and Cu35Ni25Al20Ti20) have been designed using thermo-physical calculations and Thermo-Calc software. These MEAs were then produced using copper heart arc melting and suction cast into cylindrical rods with 3 mm diameters. X-ray diffraction (XRD), optical microscope (OM), transmission electron microscope (TEM), scanning electron microscope (SEM), and energy-dispersive spectroscopy (EDS) were used for structural characterization. The corresponding results reveal that the Cu20Ni20Al30Ti30, MEA, consists of a body-centered cubic (BCC-B2) phase with intermetallic compounds (ICs), whereas Cu25Ni25Al25Ti25 has single BCC-B2 phase. When the amounts Cu and Ni are increased, system drives itself toward a face-centered cubic (FCC) structure. A dual BCC and FCC composite Cu35Ni25Al20Ti20 has been detected as the most promising MEA among the others with 820 and 1338 MPa measured yield and compressive strength, respectively.en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) [216M058]en_US
dc.description.sponsorshipThis work is supported by the Scientific and Technological Research Council of Turkey (TUBITAK) under Grant No. 216M058. The authors would like to thank ONATUS ongoru Teknolojileri Company for the support with the Thermo-Calc software.en_US
dc.identifier.doi10.1007/s11665-020-04830-w
dc.identifier.endpage2908en_US
dc.identifier.issn1059-9495
dc.identifier.issn1544-1024
dc.identifier.issue5en_US
dc.identifier.scopus2-s2.0-85084522548en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage2898en_US
dc.identifier.urihttps://doi.org/10.1007/s11665-020-04830-w
dc.identifier.urihttps://hdl.handle.net/20.500.12452/11256
dc.identifier.volume29en_US
dc.identifier.wosWOS:000532113300001en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.ispartofJournal Of Materials Engineering And Performanceen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectDual Fccen_US
dc.subjectBcc Compositeen_US
dc.subjectHighen_US
dc.subjectMedium-Entropy Alloyen_US
dc.subjectMechanical Propertiesen_US
dc.subjectNon-Equiatomic Compositionsen_US
dc.titleDesign of Novel Non-equiatomic Cu-Ni-Al-Ti Composite Medium-Entropy Alloysen_US
dc.typeArticleen_US

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