The effect of convection on the dendrite to eutectic transition View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1986-06

AUTHORS

J. D. Verhoeven, J. T. Mason, R. Trivedi

ABSTRACT

Vertical solidification experiments have been carried out in binary eutectic metal alloy systems using both upward and downward solidification directions with solutes heavier and lighter than the solvent metal. Hence, conditions of all four possible combinations of thermal and solutal Rayleigh numbers were studied: RaT/Ras = −/ −, −/+, +/+, +/ −. Compositions close to eutectic values were examined under conditions of gradient and velocity which produced cellular, dendritic, and eutectic structures. The experimental results indicate that solutal induced convection plays a dominant role in controlling both dendrite/liquid interface shape and the dendrite clustering effect at the dendrite/eutectic transition. In both the presence or absence of cluster formation, the transition is shown to occur by a gradual change in dendrite size, morphology, and number. More... »

PAGES

991-1000

Journal

TITLE

Metallurgical Transactions A

ISSUE

6

VOLUME

17

Author Affiliations

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf02661265

DOI

http://dx.doi.org/10.1007/bf02661265

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1002813168


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