Primary dendrite spacing in constrained solidification

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    Abstract

    A theory of primary dendrite spacing γ1 in directional solidification of alloys is developed based on thermodynamic and geometric arguments. The results for a cubic material is γ1 = (πΔTR/G)0.5), where ΔT is the unit undercooling, R is the tip radius and G is the temperature gradient. This prediction is in quantitative agreement with experimental data.

    Original languageEnglish
    Pages (from-to)141 - 143
    Number of pages3
    JournalMaterials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
    Volume148
    Issue number1
    DOIs
    Publication statusPublished - 1991
    MoE publication typeA1 Journal article-refereed

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