High-Accuracy X-Ray Diffraction Analysis of Phase Evolution Sequence During Devitrification of Cu50Zr50 Metallic Glass

dc.contributor.author Kalay, I.
dc.contributor.author Napolitano, Ralph
dc.contributor.author Kramer, M. J.
dc.contributor.author Napolitano, Ralph
dc.contributor.department Materials Science and Engineering
dc.date 2018-02-14T21:16:20.000
dc.date.accessioned 2020-06-30T06:07:03Z
dc.date.available 2020-06-30T06:07:03Z
dc.date.copyright Fri Jan 01 00:00:00 UTC 2010
dc.date.embargo 2013-11-12
dc.date.issued 2010-11-24
dc.description.abstract <p>Real-time high-energy X-ray diffraction (HEXRD) was used to investigate the crystallization kinetics and phase selection sequence for constant-heating-rate devitrification of fully amorphous Cu<sub>50</sub>Zr<sub>50</sub>, using heating rates from 10 K/min to 60 K/min (10 °C/min to 60 °C/min). <em>In situ</em> HEXRD patterns were obtained by the constant-rate heating of melt-spun ribbons under synchrotron radiation. High-accuracy phase identification and quantitative assessment of phase fraction evolution though the duration of the observed transformations were performed using a Rietveld refinement method. Results for 10 K/min (10 °C/min) heating show the apparent simultaneous formation of three phases, orthorhombic Cu<sub>10</sub>Zr<sub>7</sub>, tetragonal CuZr<sub>2</sub> (C11<sub>b</sub>), and cubic CuZr (B2), at 706 K (433 °C), followed immediately by the dissolution of the CuZr (B2) phase upon continued heating to 789 K (516 °C). Continued heating results in reprecipitation of the CuZr (B2) phase at 1002 K (729 °C), with the material transforming completely to CuZr (B2) by 1045 K (772 °C). The Cu<sub>5</sub>Zr<sub>8</sub> phase, previously reported to be a devitrification product in C<sub>50</sub>Zr<sub>50</sub>, was not observed in the present study.</p>
dc.description.comments <p>This article is from <em>Metallurgical and Materials Transactions A</em> 42 (2010): 1122, <a href="http://dx.doi.org/10.1007/s11661-010-0531-9" target="_blank">doi:10.1007/s11661-010-0531-9</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/mse_pubs/169/
dc.identifier.articleid 1163
dc.identifier.contextkey 6198099
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath mse_pubs/169
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/55497
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/mse_pubs/169/2010_Napolitano_HighAccuracy.pdf|||Fri Jan 14 21:07:34 UTC 2022
dc.source.uri 10.1007/s11661-010-0531-9
dc.subject.disciplines Ceramic Materials
dc.subject.disciplines Metallurgy
dc.subject.keywords Ames Laboratory
dc.title High-Accuracy X-Ray Diffraction Analysis of Phase Evolution Sequence During Devitrification of Cu50Zr50 Metallic Glass
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 5d15ca50-0822-4c99-a260-7004cd21408d
relation.isOrgUnitOfPublication bf9f7e3e-25bd-44d3-b49c-ed98372dee5e
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