Effect of Sm on Crystallization Kinetics of Cu-Zr-Al Metallic Glasses

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dc.contributor.authorSikan, F.
dc.contributor.authorPolat, G.
dc.contributor.authorKalay, I.
dc.contributor.authorKalay, Y. E.
dc.date.accessioned2024-02-23T14:16:21Z
dc.date.available2024-02-23T14:16:21Z
dc.date.issued2020
dc.departmentNEÜen_US
dc.description.abstractThe effect of Sm micro-alloying on non-isothermal and isothermal crystallization kinetics of (Zr50Cu40Al10)(100-x)Sm-x (x = 0, 2, 4 at. % Sm) alloys were investigated using differential scanning calorimetry (DSC), transmission electron microscopy (TEM), and X-ray diffraction (XRD). Crystallization activation energies for each composition were calculated in non-isothermal conditions using Kissinger and Ozawa methods and in isothermal conditions using Johnson-Mehl-Avrami model. XRD analysis showed that crystallization product Cu10Zr7 changes to Cu2Sm with Sm presence in isothermal conditions. Both isothermal and isochronal calculations yield that the energy barrier for crystallization has increased with Sm addition. On the other hand, crystallization point drops to lower temperature at the expense of an increase in the pre-exponential factor. The Avrami exponents for all compositions were found to be below 2.5, indicating that crystallization was governed by a diffusion-controlled three-dimensional growth with a decreasing nucleation rate. The apparent increase in crystallization activation energies with increasing Sm content can be one of the affecting factors for commonly held idea of increased glass forming ability for rare-earth containing Zr-based metallic glasses.en_US
dc.identifier.doi10.1016/j.tca.2019.178439
dc.identifier.issn0040-6031
dc.identifier.issn1872-762X
dc.identifier.scopus2-s2.0-85074455622en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.1016/j.tca.2019.178439
dc.identifier.urihttps://hdl.handle.net/20.500.12452/12633
dc.identifier.volume683en_US
dc.identifier.wosWOS:000509628900008en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofThermochimica Actaen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectMetallic Glassesen_US
dc.subjectCrystallizationen_US
dc.subjectKineticsen_US
dc.titleEffect of Sm on Crystallization Kinetics of Cu-Zr-Al Metallic Glassesen_US
dc.typeArticleen_US

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