Materials Science and Engineering A
The cell/dendrite tip radii in directionally solidified Pb-8.4at.%Au have been investigated as a function of the growth speed and thermal gradient in the liquid at the tip. Dendrite growth models are not able to predict quantitatively the tip radii and tip compositions separately because of the occurrence of thermosolutal convection during growth. However, the relationship between the destabilizing solutal gradient, the stabilizing thermal gradient and the capillarity at the tip assumed using the ''marginal stability'' criterion is supported by the experimental data.
Tewari, Surendra N., "Dendrite Tip Radii in Directionally Solidified Pb-8.4-Atmospheric-Percent-Au" (1990). Chemical & Biomedical Engineering Faculty Publications. 57.
Tewari, S. (1990). Dendrite tip radii in directionally solidified Pb-8.4at.%Au. Materials Science & Engineering A, 130(2), 219-229. doi:10.1016/0921-5093(90)90062-8
NOTICE: this is the author’s version of a work that was accepted for publication in Materials Science and Engineering A. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Materials Science and Engineering A, 130, 2, (December 1990) DOI 10.1016/0921-5093(90)90062-8