Metallurgical and Materials Transactions A

, Volume 15, Issue 6, pp 977–982 | Cite as

Interdendritic Spacing: Part II. A Comparison of Theory and Experiment

  • R. Trivedi
Symposium on Establishment of Microstructural Spacing during Dendritic and Cooperative Growth


The primary spacing data of Part I are compared to the existing theoretical models of Hunt and of Kurz and Fisher, and a significant disagreement is found. A theoretical model based on the Hunt model is developed, and it is found that the theory adequately explains the variation in primary spacing, λ1, with the growth rate,V. A maximum in λ1,vs V is predicted and the velocity at which the maximum occurs matches with the result obtained experimentally. It is shown that the maximum in λ1 corresponds to the dendrite-to-cell transition, and cellular structures are found to grow with much smaller spacings than dendritic structures under identical growth conditions.


Metallurgical Transaction Interface Shape Primary Spacing Succinonitrile Primary Dendrite Spacing 
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Copyright information

© The Metallurgical of Society of AIME 1984

Authors and Affiliations

  • R. Trivedi
    • 1
  1. 1.Department of Materials Science and EngineeringIowa State UniversityAmes

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