Convective and Interfacial Instabilities During Solidification
During solidification and crystal growth from the melt, the crystal-melt interface is subject to morphological instability [1,2,3,4,5,6,7,8]. Under conditions for which unstable interfaces occur, the interface morphology is sometimes cellular, but dendritic (tree-like) growth usually occurs when the degree of instability is large. The solute distribution in the crystal influences the properties of the crystal, and since solid state diffusion is usually very slow, this solute distribution is determined primarily by the solute distribution in the melt at the crystal-melt interface. Thus, the interface morphology and fluid flow in the melt play a central role in determining the properties of the solidified material.
KeywordsConvection Chromium Hexagonal Succinonitrile Nonitrile
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