Document Type

Article

Publication Date

8-1999

Publication Title

Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

Abstract

The alloys Pb-2.2 wt pet Sb and Pb-5.8 wt pet Sb were directionally solidified with three different thermal gradients of 40, 86, and 140 K cm(-1) at growth rates ranging from 0.6 to 30 mu m s(-1). A Gaussian peak amplitude analysis of the cell/dendrite spacing distribution shows a distinct peak corresponding to the nearest neighbors. The peaks corresponding to the second and the third nearest neighbor spacings are also brought out by this technique. The ratios of the second to the first nearest neighbor spacings and that of the third to the first neighbor spacings are 1.85 +/-: 0.11 and 2.70 +/- 0.25, respectively. This indicates that the cells and dendrites both have a hexagonal distribution with a significant amount of superimposed noise. This is also confirmed by the frequency distribution of their number of nearest neighbors' (coordination number).

Original Citation

O'Dell, S.P., Ding, G.L., & Tewari, S.N. (1999). Cell/Dendrite Distribution in Directionally Solidified Hypoeutectic Pb-Sb Alloys. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science 30, 2159-2165.

Volume

30

Issue

8

DOI

10.1007/s11661-999-0027-7

Version

Publisher's PDF

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