Paper Title:
Macrosegregation Caused by Deformation of the Mushy Zone
  Abstract

An experimental set-up for investigating macrosegregation formation due to deformation of an isotropic metallic mushy zone is presented. In the experiment, a semisolid Al-5.9wt%Cu sample is isothermally and non-uniformly compressed. Concentration and eutectic fraction are measured along selected lines, after quenching the sample. Results show that interdendritic liquid is pressed out of the central part of the sample to its outer part, increasing the concentration in this region. The experimental test is then addressed by a two-phase continuum model recently presented elsewhere. The modelling results show the same tendencies observed experimentally, although local variations in composition are not well correlated. Suggestions for future work are made.

  Info
Periodical
Edited by
A Roósz, M. Rettenmayr and Z. Gácsi
Pages
187-192
DOI
10.4028/www.scientific.net/MSF.508.187
Citation
L. C. Nicolli, C. L. Martin, A. Mo, O. Ludwig, "Macrosegregation Caused by Deformation of the Mushy Zone", Materials Science Forum, Vol. 508, pp. 187-192, 2006
Online since
March 2006
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Price
$32.00
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