Parameter-Free Test of Alloy Dendrite Growth Theory

DSpace/Manakin Repository

Parameter-Free Test of Alloy Dendrite Growth Theory

Show simple item record Arnold, Craig B. Herlach, Dieter M. Aziz, Michael Schwarz, Matthias 2009-04-21T03:24:01Z 1999
dc.identifier.citation Arnold, 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.issn 1098-0121 en
dc.description.abstract In 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.sponsorship Engineering and Applied Sciences en
dc.language.iso en_US en
dc.publisher The American Physical Society en
dc.relation.isversionof en
dash.license LAA
dc.title Parameter-Free Test of Alloy Dendrite Growth Theory en
dc.relation.journal Physical Review Series B 59 en Aziz, Michael

Files in this item

Files Size Format View
Aziz_AlloyDendriteGrowth.pdf 181.9Kb PDF View/Open

This item appears in the following Collection(s)

Show simple item record


Search DASH

Advanced Search