Paper Title:
Mechanical Properties and Microstructures of Mg-Al-Zn Alloys with High Aluminum Contents
  Abstract

The effect of Al contents on the properties and structures of AZ80, AZ91,AZ131 and AZ151 magnesium alloys has been studied. The experiments of homogenization treatment, hot extrusion, and annealing treatment are carried out in order to study the effects of these processes to the properties and structure of AZ80, AZ91, AZ131 and AZ151 magnesium alloys. The parameters of homogenization treatment (420°C×24h, 420°C×36h) determined by DSC and metallurgical photo are sufficient which ensure the eutectic phase melt into magnesium matrix greatly. The strength of extruded bars shortly after homogenization treatment increase (Rp0.2 from 232 to 310MPa), but elongation decrease (A from 12 to 2.5%) with Al contents. The differences and causes of structure and mechanical properties of extruded bar after the process of aging are analyzed in detail by tensile experiments, hardness measurement, and optical observation.

  Info
Periodical
Materials Science Forum (Volumes 610-613)
Main Theme
Edited by
Zhongwei Gu, Yafang Han, Fusheng Pan, Xitao Wang, Duan Weng and Shaoxiong Zhou
Pages
801-805
DOI
10.4028/www.scientific.net/MSF.610-613.801
Citation
X. G. Li, K. Zhang, Y. J. Li, X. Zhao, X. J. Mi, "Mechanical Properties and Microstructures of Mg-Al-Zn Alloys with High Aluminum Contents", Materials Science Forum, Vols. 610-613, pp. 801-805, 2009
Online since
January 2009
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