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.
|Pages (from-to)||141 - 143|
|Number of pages||3|
|Journal||Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing|
|Publication status||Published - 1991|
|MoE publication type||A1 Journal article-refereed|