A micro-segregation model

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper a micro-segregation model, on the scale of a dendrite secondary arm space, is developed. The model is constructed to interface with macro-scale solidification calculations of multi-component alloys and account for coarsening effects. The keys step in the model is a discrete time stepping that allows for the application of equilibrium (lever rule) thermodynamics, applied to the solid fraction that forms in a given time step, without compromising the overall non-equilibrium solid solute distribution. The application of the model is illustrated by comparing its predictive performance, for several limit cases, with analytical and full numerical micro-segregation solutions.

Original languageEnglish (US)
Title of host publicationSolidification Processes and Microstructures
Subtitle of host publicationA Symposium in Honor of Wilfried Kurz
EditorsM. Rappaz, C. Beckermann, R. Trivedi
Pages145-150
Number of pages6
StatePublished - Jul 14 2004
EventSolidification Processes and Microstructures: A Symposium in Honor of Wilfried Kurz - Charlotte, NC., United States
Duration: Mar 14 2004Mar 18 2004

Publication series

NameSolidification Processes and Microstructures: A Symposium in Honor of Wilfried Kurz

Other

OtherSolidification Processes and Microstructures: A Symposium in Honor of Wilfried Kurz
CountryUnited States
CityCharlotte, NC.
Period3/14/043/18/04

Keywords

  • Alloy Solidification
  • Macro-segregation
  • Micro-segregation
  • Modeling

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