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Kinetics and Mechanisms of Isothermal Devitrification in Amorphous Cu50Zr50

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dc.contributor.author Cullinan, Tim
dc.contributor.author Kalay, İlkay
dc.contributor.author Kalay, Y. Eren
dc.contributor.author Kramer, Matt
dc.contributor.author Napolitano, Ralph
dc.date.accessioned 2022-06-07T07:20:13Z
dc.date.available 2022-06-07T07:20:13Z
dc.date.issued 2015-02
dc.identifier.citation Cullinan, Tim...et al. (2015). "Kinetics and Mechanisms of Isothermal Devitrification in Amorphous Cu50Zr50", Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, Vol. 46, No. 2, pp. 600-613. tr_TR
dc.identifier.issn 1073-5623
dc.identifier.uri http://hdl.handle.net/20.500.12416/5602
dc.description.abstract The crystallization kinetics and microstructural dynamics associated with devitrifying a meltspun Cu50Zr50 metallic glass were investigated using isothermal treatments, in situ high-energy synchrotron X-ray diffraction, conventional and high-resolution transmission electron microscopy, and differential scanning calorimetry. The analysis of isothermal transformations allows us to more clearly unravel the complex interplay between nucleation and growth of competing stable and metastable phases. The isothermal devitrification response was found to involve the Cu10Zr7, CuZr2, and CuZr phases, consistent with previously reported constant heating rate experiments, but here we have resolved the phase evolution and structural characteristics of the transformation,including the very early stages of crystallization. At 671 K (398C),the isothermal transformation starts with the formation of the Cu10Zr7 phase, which grows in a generally equiaxed morphology. At a size of approximately 100 nm, the growth of the Cu10Zr7 particles is interrupted by the precipitation of a thin layer of the CuZr2 phase, upon which the metastable CuZr (B2) grows epitaxially. Crystallization kinetics are quantified here though in situ measurements (HEXRD, DSC) and ex situ microstructural analysis (TEM, HRTEM). Finally, the influences of chemical partitioning, diffusion, and crystallographic orientation on this sequence are examined. © 2014, The Minerals, Metals & Materials Society and ASM International. tr_TR
dc.language.iso eng tr_TR
dc.relation.isversionof 10.1007/s11661-014-2661-y tr_TR
dc.rights info:eu-repo/semantics/closedAccess tr_TR
dc.title Kinetics and Mechanisms of Isothermal Devitrification in Amorphous Cu50Zr50 tr_TR
dc.type article tr_TR
dc.relation.journal Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science tr_TR
dc.contributor.authorID 101579 tr_TR
dc.identifier.volume 46 tr_TR
dc.identifier.issue 2 tr_TR
dc.identifier.startpage 600 tr_TR
dc.identifier.endpage 613 tr_TR
dc.contributor.department Çankaya Üniversitesi, Mühendislik Fakültesi, Malzeme Bilimi ve Mühendisliği Bölümü tr_TR


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