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., CADIRLI E., KEŞLİOĞLU K., Marasli N.

JOURNAL OF CRYSTAL GROWTH, cilt.276, ss.583-593, 2005 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 276
  • Basım Tarihi: 2005
  • Doi Numarası: 10.1016/j.jcrysgro.2004.11.392
  • Dergi Adı: JOURNAL OF CRYSTAL GROWTH
  • Sayfa Sayısı: ss.583-593

Özet

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.