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dc.contributor.authorArnold, Craig B.
dc.contributor.authorAziz, Michael
dc.contributor.authorSchwarz, Matthias
dc.contributor.authorHerlach, Dieter M.
dc.date.accessioned2009-04-21T03:24:01Z
dc.date.issued1999
dc.identifier.citationArnold, Craig B., Michael J. Aziz, Matthias Schwarz and Dieter M. Herlach. Parameter-Free Test of Alloy Dendrite Growth Theory. Physical Review B 59, 334-343. The American Physical Society.en
dc.identifier.issn1098-0121en
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:2797449
dc.description.abstractIn rapid alloy solidification the dendrite-growth velocity depends sensitively on the deviations from local interfacial equilibrium manifested by kinetic effects such as solute trapping. The dendrite tip velocity undercooling function was measured in dilute Ni~Zr! over the range 1–25 m/s and 50–255 K using electromagnetic levitation techniques and compared to theoretical predictions of the model of Trivedi and colleagues for dendritic growth with deviations from local interfacial equilibrium. The input parameter to which the model predictions are most sensitive, the diffusive speed VD characterizing solute trapping, was not used as a free parameter but was measured independently by pulsed laser melting techniques, as was another input parameter, the liquid diffusivity DL. Best-fit values from the pulsed laser melting experiment are VD526 m/s and DL 52.731029 m2/s. Inserting these values into the dendrite growth model results in excellent agreement with experiment with no adjustable parameters.en
dc.description.sponsorshipEngineering and Applied Sciencesen
dc.language.isoen_USen
dc.publisherThe American Physical Societyen
dc.relation.isversionofhttp://dx.doi.org/10.1103/PhysRevB.59.334en
dash.licenseLAA
dc.titleParameter-Free Test of Alloy Dendrite Growth Theoryen
dc.relation.journalPhysical Review Series B 59en
dash.depositing.authorAziz, Michael
dc.identifier.doi10.1103/PhysRevB.59.334*
dash.contributor.affiliatedAziz, Michael


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