University of Limerick
Browse
Vynnycky_2022_Local.pdf (708.86 kB)

On the local solute redistribution equation of macrosegregation, remelting and the formation of channel segregates

Download (708.86 kB)
journal contribution
posted on 2022-10-06, 13:18 authored by Michael VynnyckyMichael Vynnycky
In this paper, we reassess the local solute redistribution equation (LSRE) of macrosegregation which, since it first appeared in 1960s, has served as a cornerstone for understanding the composition variations that occur in the solidification of alloys. We highlight some anomalies in earlier literature, in particular as regards the prediction of remelting as a precursor to the formation of channel segregates (freckles, A segregates and V-segregates) in casting processes. Also, we suggest extensions to the LSRE for situations where solute diffusion in the solid phase is not negligible, as well as when the mode of solidification is unconsolidated equiaxed dendritic, rather than columnar/consolidated equiaxed dendritic. In addition, the significance of the equation for latter-day numerical computations of macrosegregation is also discussed

History

Publication

International Journal of Heat and Mass Transfer;190, 122737

Publisher

Elsevier

Note

peer-reviewed

Language

English

Also affiliated with

  • MACSI - Mathematics Application Consortium for Science & Industry

Department or School

  • Mathematics & Statistics

Usage metrics

    University of Limerick

    Categories

    No categories selected

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC