Paper Title:
Microstructure and Mechanical Properties of an AZ31 Magnesium Alloy Processed by Accumulative Back Extrusion (ABE)
  Abstract

A new continuous severe plastic deformation (SPD) method called accumulative back extrusion (ABE) was employed to fabricate ultra-fine grained AZ31 Mg alloy. Microstructures of AZ31 alloy processed by ABE up to four passes at a temperature of 230 °C were investigated using field emission scanning electron microscopy (FESEM). The results showed that the initial average grain size of 25 µm was reduced to about 1 µm. It was also found out that the more passes gave more homogenous microstructure. In addition, in order to find the effect of grain size on the mechanical properties, micro-tension tests were carried out and the changes in the yield and tensile strength and fracture elongation were analyzed. The obtained tensile properties were discussed relying on the characteristics of as-processed microstructures.

  Info
Periodical
Materials Science Forum (Volumes 667-669)
Edited by
Jing Tao Wang, Roberto B. Figueiredo and Terence G. Langdon
Pages
1033-1038
DOI
10.4028/www.scientific.net/MSF.667-669.1033
Citation
M. Fatemi Varzaneh, J. M. Cabrera, A. Zarei Hanzaki, "Microstructure and Mechanical Properties of an AZ31 Magnesium Alloy Processed by Accumulative Back Extrusion (ABE)", Materials Science Forum, Vols. 667-669, pp. 1033-1038, 2011
Online since
December 2010
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