Paper Title:
Microstructural Study of Primary Solid Particles in High Density Semi-Solid Al-Zn-Mg Alloy during Stirring
  Abstract

The formation and character of grain boundaries in the primary solid particles observed in the metal slurries of stircast Al-4wt%Zn-1wt%Mg alloy were studied. In the semi-solid state of the solid fraction (fs) of more than 0.5, fracturing of solid particles appears to be dominated by shear force at high temperature, whilst in fs < 0.4 dendritic fragmentations are expected to occur by grain boundary melting. In case of shear rupture at fs > 0.5 coarsening of spherical solid particles takes place by Gibbs-Thompson effect of small particles remelting leading to solute redistribution.

  Info
Periodical
Solid State Phenomena (Volumes 116-117)
Edited by
C.G. Kang, S.K. Kim and S.Y. Lee
Pages
308-311
DOI
10.4028/www.scientific.net/SSP.116-117.308
Citation
J. H. Lee, Y. H. Kim, J. I. Lee, I. H. Kim, S. C. Ur, H. I. Lee, "Microstructural Study of Primary Solid Particles in High Density Semi-Solid Al-Zn-Mg Alloy during Stirring", Solid State Phenomena, Vols. 116-117, pp. 308-311, 2006
Online since
October 2006
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Price
$32.00
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