Document Type
Article
Publication Date
12-2003
Publication Title
Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Abstract
The Pb-2.2 wt pct Sb alloy has been directionally solidified in 1, 2-, 3-, and 7-mm-diameter crucibles with planar and dendritic liquid-solid interface morphology. For plane front solidification, the experimentally observed macrosegregation along the solidified length follows the relationship proposed by Favier.([17,18]) Application of a 0.4 T transverse magnetic field has no effect on the extent of convection. Reducing the ampoule diameter appears to decrease the extent of convection. However, extensive convection is still present even in the 1-mm-diameter crucible. An extrapolation of the observed behavior indicates that nearly diffusive transport conditions require ampoules that are about 40 mum in diameter. Reduction of the crucible diameter does not appear to have any significant effect on the primary dendrite spacing. However, it results in considerable distortion of the dendrite morphology and ordering. This is especially true for the 1-mm-diameter samples.
Repository Citation
Chen, Jun; Tewari, Surendra N.; Magadi, G.; and DeGroh, H. C. III, "Effect of Crucible Diameter Reduction on the Convection, Macrosegregation, and Dendritic Morphology During Directional Solidification of Pb-2.2 Wt Pct Sb Alloy" (2003). Chemical & Biomedical Engineering Faculty Publications. 10.
https://engagedscholarship.csuohio.edu/encbe_facpub/10
Original Citation
Chen, J., Tewari, S.N., Magadi, G., & DeGroh, H.C. (2003). Effect of Crucible Diameter Reduction on the Convection, Macrosegregation, and Dendritic Morphology During Directional Solidification of Pb-2.2 Wt Pct Sb Alloy. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science 34A, 2985-2990.
Volume
34A
Issue
12
DOI
10.1007/s11661-003-0197-7
Version
Publisher's PDF
Publisher's Statement
Copyright 2003 ASM International. This paper was published in Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, Vol. 34A, Issue 12, pp. 2985-2990 and is made available as an electronic reprint with the permission of ASM International. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplications of any material in this paper for a fee or for commercial purposes, or modification of the content of this paper are prohibited.
Available on publisher's site at: http://www.springerlink.com/content/9364865t205316m2/.
