Equiaxed dendritic solidification with convection: Part II. Numerical simulations for an Al-4 Wt pet Cu alloy

C. Y. Wang, C. Beckermann

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Abstract

The multiphase model developed in part I for equiaxed dendritic solidification with melt convection and solid-phase transport is applied to numerically predict structural and compositional development in an Al-4 wt pet Cu alloy solidifying in a rectangular cavity. A numerical technique combining a fully implicit control-volume-based finite difference method with a multiple time-step scheme is developed for accurate and efficient simulations of both micro- and macroscale phenomena. Quantitative results for the dendritic microstructure evolution in the presence of melt convection and solid movement are obtained. The remarkable effects of the solid-liquid multiphase flow pattern on macrosegregation as well as the grain size distribution are illustrated.

Original languageEnglish (US)
Pages (from-to)2765-2783
Number of pages19
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume27
Issue number9
DOIs
StatePublished - Jan 1 1996

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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