Dependency of the dendritic arm spacings and tip radius on the growth rate and composition in the directionally solidified succinonitrile-carbon tetrabromide alloys


Kaya H. , Çadırlı E. , Keslioglu K., Maraşlı N.

JOURNAL OF CRYSTAL GROWTH, vol.276, pp.583-593, 2005 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 276
  • Publication Date: 2005
  • Doi Number: 10.1016/j.jcrysgro.2004.11.392
  • Title of Journal : JOURNAL OF CRYSTAL GROWTH
  • Page Numbers: pp.583-593

Abstract

Succinonitrile (SCN)-carbon tetrabromide (CTB) alloys for different concentrations of CTB (C(0)) were unidirectionally solidified with a constant temperature gradient (G = 7.5 K/mm) at different growth rates (V = 6.5-103.5 mu m/s). The primary dendrite arm spacings, secondary dendrite arm spacings and dendrite tip radius were measured as a function of growth rates and compositions. Theoretical models for the dendrite arm spacings and tip radius have been compared with the experimental observations, and a comparison of our results with the current theoretical models and previous experimental results have also been made. (c) 2005 Elsevier B.V. All rights reserved.