Paper Title:
Hot Working of the ZEK200 Magnesium Alloy
  Abstract

The high temperature workability of the ZEK200 Mg-alloy produced by Direct Chill casting (DC) was investigated by torsion testing between 200 and 450°C. The alloy exhibited a higher strength and a slightly lower equivalent strain to fracture than AZ31 and ZM21 produced by DC. The calculation of the constitutive equation gave a value of the activation energy for high temperature deformation close to 175 kJ/mol, in line with those calculated by following the same procedure in AZ31 and ZM21. Partial or complete recrystallization of the deformed structure was observed at 350 and 400°C respectively. Grain growth occurred after recrystallization in the samples tested at 450°C.

  Info
Periodical
Materials Science Forum (Volumes 604-605)
Edited by
Marcello Cabibbo and Stefano Spigarelli
Pages
212-222
DOI
10.4028/www.scientific.net/MSF.604-605.212
Citation
S. Spigarelli, M. El Mehtedi, P. Ricci, "Hot Working of the ZEK200 Magnesium Alloy", Materials Science Forum, Vols. 604-605, pp. 212-222, 2009
Online since
October 2008
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Price
$32.00
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