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Compressive behavior of extruded SiCw/AZ91 at temperatures close to and above the solidus of the matrix alloy

  • W. M. Gan*
  • , M. Y. Zheng
  • , S. B. Li
  • , K. Wu
  • *Corresponding author for this work
  • Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Compressive deformation behaviors of extruded SiCw/AZ91 were investigated in Gleeble-1500 thermal simulator at temperatures from 743 K to 783 K and strain rates from 6.4×10-2 s-1 to l.0×10 1s-1. Results showed that high strain rate sensitivity (-0.5) occurred during compression; deformation activation energy normalized by threshold stress was higher than the lattice self-diffusion activation energy of magnesium. Dynamic recovery (DRV) and dynamic recrystallization (DRX) took place during compression, which refined the grains. The increase of deformation energy was attributed to non-basal planes slip and climbing of dislocations and also the presence of liquid phase.

Original languageEnglish
Title of host publicationMagnesium - Science, Technology and Applications, Mg - Proceedings of the International Conference on Magnesium - Science, Technology and Applications
PublisherTrans Tech Publications Ltd
Pages827-830
Number of pages4
ISBN (Print)0878499687, 9780878499687
DOIs
StatePublished - 2005
Externally publishedYes
EventInternational Conference on Magnesium - Science, Technology and Applications - Beijing, China
Duration: 20 Sep 200424 Sep 2004

Publication series

NameMaterials Science Forum
Volume488-489
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

ConferenceInternational Conference on Magnesium - Science, Technology and Applications
Country/TerritoryChina
CityBeijing
Period20/09/0424/09/04

Keywords

  • Compressive deformation
  • Dynamic recrystallization
  • SiCw/AZ91

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