Paper Title:
On the Creep Resistance of HPDC Mg-RE Based Alloys
  Abstract

This paper presents an analysis, based on microstructural observations by transmission electron microscopy, of the influence of chemical composition on creep resistance of high pressure die casting (HPDC) Mg-4RE-0.6Zn alloys. The improved creep resistance, by increasing the Nd/La ratio of the rare earth (RE) mixture, is shown to be associated with the supersaturation of Nd solute in the -Mg matrix, evidenced by the formation of Nd-rich precipitates on dislocations after a thermal ageing treatment. The result indicates that solid solution/precipitation strengthening of the -Mg matrix is important to the creep resistance of HPDC Mg-RE based alloys.

  Info
Periodical
Materials Science Forum (Volumes 618-619)
Edited by
M.S. Dargusch & S.M. Keay
Pages
453-458
DOI
10.4028/www.scientific.net/MSF.618-619.453
Citation
S. M. Zhu, M. A. Gibson, J. F. Nie, M. Easton, C.J. Bettles, "On the Creep Resistance of HPDC Mg-RE Based Alloys", Materials Science Forum, Vols. 618-619, pp. 453-458, 2009
Online since
April 2009
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