Parameter-Free Test of Alloy Dendrite Growth Theory

DSpace/Manakin Repository

Parameter-Free Test of Alloy Dendrite Growth Theory

Citable link to this page

. . . . . .

Title: Parameter-Free Test of Alloy Dendrite Growth Theory
Author: Arnold, Craig B.; Herlach, Dieter M.; Aziz, Michael; Schwarz, Matthias

Note: Order does not necessarily reflect citation order of authors.

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.
Full Text & Related Files:
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.
Published Version: http://dx.doi.org/10.1103/PhysRevB.59.334
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:2797449

Show full Dublin Core record

This item appears in the following Collection(s)

  • FAS Scholarly Articles [6464]
    Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University
 
 

Search DASH


Advanced Search
 
 

Submitters