Paper Title:
The Effect of Zn on Microstructures and Properties of Extruded Mg-Gd-Y Alloys
  Abstract

By using digital micro-hardness testing, mechanical testing, optical microscopy(OM), scanning electron microscopy(SEM), transimission electron microscopy(TEM), microstructure and mechanical properties of Mg-9Gd-3Y-xZn (x=0,1,2,3 wt.%) alloys during extrusion and following aging at 210 °C were investigated. The results showed that Zn can refined grains of the alloy. In T5 condition the average grains of the alloy without Zn addition were about 20.08 μm; the average grains of the alloys with 1 wt.% Zn addition and 3 wt.% Zn addition were about 15.26 μm and 10.17 μm, respectively. For the alloy with 1 wt.% Zn addition in peak-aged state, the values of tensile strength and yield strength reached 418MPa and 329 MPa, as well as ductility rate reached 5.6 %, respectively, exhibiting superior mechanical properties .

  Info
Periodical
Edited by
Honghua Tan
Pages
289-294
DOI
10.4028/www.scientific.net/AMM.66-68.289
Citation
H. Z. Li, H. T. Liu, H. J. Wang, F. F. Guo, X. P. Liang, C. M. Liu, "The Effect of Zn on Microstructures and Properties of Extruded Mg-Gd-Y Alloys", Applied Mechanics and Materials, Vols. 66-68, pp. 289-294, 2011
Online since
July 2011
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