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

  • Symposium on Establishment of Microstructural Spacing during Dendritic and Cooperative Growth
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Abstract

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.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Iowa State University, 50011, Ames, IA

    R. Trivedi (Senior Scientist and Group Leader at Ames Laboratory-US-DOE, Professor)

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  1. R. Trivedi
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Trivedi, R. Interdendritic Spacing: Part II. A Comparison of Theory and Experiment. Metall Trans A 15, 977–982 (1984). https://doi.org/10.1007/BF02644689

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  • DOI: https://doi.org/10.1007/BF02644689

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