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The Effect of Solid and Liquid Inclusions on Morphology of Crystallization Front
Author(s) -
Ovsienko D. E.,
Fedorov O. P.,
Kiriyevsky B. A.,
Gershtein G. I.,
Chemerinsky G. P.
Publication year - 1986
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170210606
Subject(s) - crystallization , morphology (biology) , radius , impurity , particle (ecology) , critical radius , front (military) , materials science , alloy , chemical physics , crystallography , chemical engineering , chemistry , thermodynamics , spheres , composite material , geology , physics , organic chemistry , paleontology , oceanography , computer security , astronomy , computer science , engineering
The interaction between crystallization front and solid particles was studied for substances characterized by the normal growth mechanism (continuous growth). It has been measured the critical velocity below which the particle of radius R is repulsed by moving interface and above it is captured. It has been shown that critical velocity is proportional to R − (1.4–1.8) what satisfactorily agrees with Chernov‐Temkin's theory. Data have been received about change of interface morphology at capture of solid particles for growth from pure and impurity‐contained melt. The dendrites have been found to split at interaction with particles and concentration inhomogeneities. Taking for example Al‐Cu alloy, possibility has been shown to disperse the dendritic structure by formation concentration inhomogeneities in the melt.