Document Type

Article

Publication Date

12-6-2004

Journal or Book Title

Physical Review B

Volume

70

Issue

214103

First Page

1

Last Page

11

DOI

10.1103/PhysRevB.70.214103

Abstract

The quantitative determination of the three-dimensional Wulff shape for a metallic crystal-melt system is reported here. The anisotropy of crystal-melt interfacial free energy is experimentally measured for the Al–Sn binary system at temperatures of 300 and 500°C. Equilibrium shapes of liquid droplets entrained within the crystalline phase are measured experimentally on sequential two-dimensional sections, and the three-dimensional Wulff plot is reconstructed. For this system, it is found that a single-parameter description of anisotropy is not sufficient, and the anisotropy is reported using the leading terms of the relevant cubic harmonics. Accordingly, the anisotropy coefficients are determined to be ε1=(1.81±0.36)×10−2 and ε2=(−1.12±0.13)×10−2. In addition, the corresponding normal stiffness components as well as a generalized stiffness are quantified and compared with available predictions from atomistic simulations.

Comments

This article is from Physical Review B 70 (2004): 1, doi:10.1103/PhysRevB.70.214103 . Posted with permission.

Copyright Owner

The American Physical Society

Language

en

File Format

application/pdf

Included in

Metallurgy Commons

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