Paper Title:
Effect of Initial Microstructure under Different Solidification Conditions on Hot Working Behavior of AZ31 Alloy
  Abstract

In order to investigate the effect of the as-cast microstructure on the hot working behavior of an AZ31 magnesium alloy, specimens were cast in copper moulds with and without water cooling. A series of compression tests were performed at a temperature of 350 °C, a strain rate of 0.01 s-1, and at strains up to 1.0. It was found that as-cast microstructure is very sensitive to the solidification conditions, which leads to a significant difference in flow behavior and dynamic recrystallization (DRX) characteristics. It appears that more uniform and refined as-cast grain size promotes dynamic recrystallization and reduces the flow stress. It is also possible that second phases (>1+m in size) contribute to DRX by acting as nuclei.

  Info
Periodical
Materials Science Forum (Volumes 561-565)
Main Theme
Edited by
Young Won Chang, Nack J. Kim and Chong Soo Lee
Pages
325-328
DOI
10.4028/www.scientific.net/MSF.561-565.325
Citation
L. Shang, S. Yue, E. Essadiqi, A. Javaid, J. T. Carter, R. Verma, "Effect of Initial Microstructure under Different Solidification Conditions on Hot Working Behavior of AZ31 Alloy", Materials Science Forum, Vols. 561-565, pp. 325-328, 2007
Online since
October 2007
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$32.00
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