Interdendritic spacing: Pt. II. A comparison of theory and experiment

Journal Article · Fri Jun 01 04:00:00 EDT 1984 · Metall. Trans., A; (United States)

DOI:https://doi.org/10.1007/BF02644689· OSTI ID:5133294

Trivedi, R

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, lambda/sub 1/ corresponds to the growth rate, V. A maximum in lambda/sub 1/ 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 lambda/sub 1/ 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.

• Research Organization: Ames Laboratory-USDOE, Ames, IA
• OSTI ID: 5133294
• Journal Information: Metall. Trans., A; (United States), Journal Name: Metall. Trans., A; (United States) Journal Issue: 6 Vol. 15A:6; ISSN MTTAB
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
COMPARATIVE EVALUATIONS
CRYSTAL GROWTH
CRYSTALLIZATION
CRYSTALS
DENDRITES
DISTRIBUTION
MATHEMATICAL MODELS
PHASE TRANSFORMATIONS
SPATIAL DISTRIBUTION
VELOCITY