Paper Title:
Microstructures and Mechanical Properties of Mg-9Zn-Zr Magnesium Alloys
  Abstract

The effects of rare earth addtition of Er on the microstructures and mechanical properties of Mg-9Zn-Zr magnesium alloys were examined. The results showed that the addition of Er resulted in the formation of two types of thermally stable Er-bearing compounds with distinct Zn/Er ratio. The volume fraction of the second-phase particles increased with the increase of Er addition. 2% Er could refine the as-cast microstructure effectively. The yield strength generally increased and the elongation decreased gradually. 0.5% Er-bearing alloy had optimum combined mechanical properties, with the yield strength, tensile strength and elongation being 313MPa, 366MPa and 22%, respectively. Furthermore, addition of Er brought about homogenous deformation behaviour and recrystallization behaviour to the alloy.

  Info
Periodical
Materials Science Forum (Volumes 654-656)
Main Theme
Edited by
Jian-Feng Nie and Allan Morton
Pages
643-646
DOI
10.4028/www.scientific.net/MSF.654-656.643
Citation
J. Zhang, Q. Ma, F. S. Pan, R. L. Zuo, "Microstructures and Mechanical Properties of Mg-9Zn-Zr Magnesium Alloys", Materials Science Forum, Vols. 654-656, pp. 643-646, 2010
Online since
June 2010
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