Paper Title:
Hot Deformation Behavior of SiCw/AZ91 Magnesium Matrix Composite in Compression
  Abstract

The compressive behavior of squeeze cast SiCw/AZ91 composite in the temperature range of 423-723K and in the strain rate range of 0.001-0.25 s-1 was investigated. The compressive true stress-true strain curves were measured and hot deformation microstructures were observed. The strain rate sensitivity exponent (m) of the SiCw/AZ91 composite increased with the increasing of temperature. The activation energy of deformation varied over the range of test conditions examined indicated that the deformation was controlled by more than one mechanism. The reorientation of SiC whiskers in the composite was observed during compression. During the compression, dynamic recovery and dynamic recrystallization occurred in the SiCw/AZ91 composite.

  Info
Periodical
Materials Science Forum (Volumes 475-479)
Main Theme
Edited by
Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie
Pages
893-896
DOI
10.4028/www.scientific.net/MSF.475-479.893
Citation
S.B. Li, M. Y. Zheng, W. M. Gan, K. Wu, "Hot Deformation Behavior of SiCw/AZ91 Magnesium Matrix Composite in Compression", Materials Science Forum, Vols. 475-479, pp. 893-896, 2005
Online since
January 2005
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$32.00
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