A model of microsegregation during binary alloy solidification

Vaughan R Voller

doi:10.1016/S0017-9310(99)00268-9

A model of microsegregation during binary alloy solidification

Vaughan R Voller

Civil, Environmental, and Geo- Engineering

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

Two numerical microsegregation models are presented which can be used to check approximate microsegregation relationships used for large-scale solidification analysis. In the first, the solidification is controlled by a constant cooling rate, while a parabolic growth rate is assumed in the second. Both account for solute back-diffusion into the solid and coarsening of the arm space. Comparison with limiting analytical solutions and measurements indicate that both models function correctly and can provide accurate and practical results.

Original language	English (US)
Pages (from-to)	2047-2052
Number of pages	6
Journal	International Journal of Heat and Mass Transfer
Volume	43
Issue number	11
DOIs	https://doi.org/10.1016/S0017-9310(99)00268-9
State	Published - Jun 1 2000

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abstract = "Two numerical microsegregation models are presented which can be used to check approximate microsegregation relationships used for large-scale solidification analysis. In the first, the solidification is controlled by a constant cooling rate, while a parabolic growth rate is assumed in the second. Both account for solute back-diffusion into the solid and coarsening of the arm space. Comparison with limiting analytical solutions and measurements indicate that both models function correctly and can provide accurate and practical results.",

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AB - Two numerical microsegregation models are presented which can be used to check approximate microsegregation relationships used for large-scale solidification analysis. In the first, the solidification is controlled by a constant cooling rate, while a parabolic growth rate is assumed in the second. Both account for solute back-diffusion into the solid and coarsening of the arm space. Comparison with limiting analytical solutions and measurements indicate that both models function correctly and can provide accurate and practical results.

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