Modeling and experimental study of the interface morphology and growth kinetics for fibrous growth of eutectic

Yao, X. (2006) Modeling and experimental study of the interface morphology and growth kinetics for fibrous growth of eutectic. Journal of Materials Research, 21 (12). pp. 3009-3016.

[img] PDF (Published Version (Proof)) - Published Version
Restricted to Repository staff only

View at Publisher Website: http://dx.doi.org/10.1557/JMR.2006.0374

Abstract

Experimental studies of fibrous eutectic growth in succinonitrile–camphor reveal that models of the stable range of interfibrous spacings must incorporate the dynamic effects and the instability of the growth front of the fibrous phase, which determines the fineness and regularity of the microstructures. An analytical mathematical model for fibrous eutectic growth has been developed and compared with the experimental results. The selected wavelength scales obey ? = vd0lsf(ls/lt), where d0, ls, lt are the capillary, diffusion, and thermal lengths, respectively. While only at a relatively high growth rate or steep temperature gradient, the scaling law ?2V = constant is fulfilled. It is found that the selected band of interfibrous spacings is very narrow. This means that the interfibrous spacing is almost unique at a given growth rate and a fixed temperature gradient. The effects of convection on the interfibrous spacing selection and fibrous phase instability of short wavelength perturbations have also been investigated. These studies reveal that the controlled solidification of a fibrous eutectic produces a very fine and regular microstructure.

Item ID: 4070
Item Type: Article (Refereed Research - C1)
Keywords: modelling; solidification; fibrous eutectic; growth
Related URLs:
ISSN: 0884-2914
Date Deposited: 23 Oct 2009 03:02
FoR Codes: 01 MATHEMATICAL SCIENCES > 0103 Numerical and Computational Mathematics > 010301 Numerical Analysis @ 40%
09 ENGINEERING > 0912 Materials Engineering > 091207 Metals and Alloy Materials @ 60%
SEO Codes: 86 MANUFACTURING > 8612 Fabricated Metal Products > 861203 Metal Castings @ 50%
86 MANUFACTURING > 8611 Basic Metal Products (incl. Smelting, Rolling, Drawing and Extruding) > 861199 Basic Metal Products (incl. Smelting, Rolling, Drawing and Extruding) not elsewhere classified @ 30%
89 INFORMATION AND COMMUNICATION SERVICES > 8902 Computer Software and Services > 890202 Application Tools and System Utilities @ 20%
Citation Count from Web of Science Web of Science 3
Downloads: Total: 5
More Statistics

Actions (Repository Staff Only)

Item Control Page Item Control Page