Paper Title:
Microstructure and Precipitates in Mg-Zn-Y Alloys
  Abstract

The present work studied the precipitate microstructures in as-cast Mg-Zn-Y-Zr alloys. The experimental result showed that there is significant number of small precipitates within the grains besides the icosahedral quasicrystals along the grain boundaries. Among these precipitates, a new phase has been identified. The new phase displays square morphologies with the size in the range of 200 nm to 2 μm. According to the energy dispersive spectrometer (EDS), this phase could be a metallic Y-riched compound. The diffraction patterns can be indexed with an f.c.c. structure with the lattice parameter a = 0.52±0.1 nm. The structure does not agree with any precipitate structures that have been reported from the previous studies of Mg-Zn-Y alloys.

  Info
Periodical
Materials Science Forum (Volumes 546-549)
Edited by
Yafang Han et al.
Pages
203-206
DOI
10.4028/www.scientific.net/MSF.546-549.203
Citation
M. Zhang, W. Z. Zhang, G. Y. Yuan, Q.L. Zhao, "Microstructure and Precipitates in Mg-Zn-Y Alloys", Materials Science Forum, Vols. 546-549, pp. 203-206, 2007
Online since
May 2007
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Price
$32.00
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