作者: M. A. Chopra , S. N. Tewari
DOI: 10.1007/BF02665013
关键词:
摘要: The dependence of primary arm spacings on growth speed has been investigated for cellular and dendritic arrays in directionally solidified Pb-10 wt pct Sn. spatial arrangements cells dendrites, as given by their coordination number, are not very different from each other. spacing maxima the cell-to-dendrite transition appear to be strongly influenced magnitude solute partition coefficient(k). planar-to-cellular Pb-Sn(k = 0.50) is supercritical compared subcritical behavior reported Al-Cu (K 0.14) succinonitrile-acetone(k 0.1).