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Effect of Buoyancy-driven Convection on Lamellar Spacing of an AlZn Eutectic

✍ Scribed by V. Tuček; S. Holeček; L. Kubiček; Dr. Č. Barta

Publisher: John Wiley and Sons
Year: 1986
Tongue: English
Weight: 273 KB
Volume: 21
Category: Article
ISSN: 0232-1300
DOI: 10.1002/crat.2170211024

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✦ Synopsis

The influence of buoyancy-driven convection on the lamellar spacing of an Al-Zn cutectic was studied under conditions of oriented crystallization. The convection due to huoyancy was affected by the mold position respective to thc direction of action of the force of gravity. It has been found that the buoyancy-driven convection does not oxcrt, any direct effect on the lamellar spacing. Rather, it only affects the rate of advance of tho crystallization front. The lamellar spacing 1 of the Al-Zn eutectic can be described as function of this rate of advance V by the relation 2 = I.'-0.46. 9.0 npOBeAeH0 HCCJIeAOBaHHe AefiCTBHR TeIIJIOBOfi l' paBHTa4HOHHOfi KOHBeKUHH npH

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