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Improvement of strength and ductility of MG-ZN-CA-MN alloy by equal channel angular pressing

  • L. B. Tong
  • , M. Y. Zheng*
  • , S. W. Xu
  • , P. Song
  • , K. Wu
  • , S. Kamado
  • *Corresponding author for this work
  • Harbin Institute of Technology
  • Nagaoka University of Technology

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

Abstract

An ultrafine-grained (UFG) Mg-5.25 wt.% Zn-0.6 wt.% Ca-0.3 wt.% Mn alloy was produced by subjecting the as-extruded alloy to equal channel angular pressing (ECAP) for 4 passes at 250 and 300°C, respectively. ECAP resulted in a remarkable grain refinement. After ECAP processing at 250°C, basal planes are oriented both parallel and inclined about 45° to the extrusion direction, while most the basal planes are oriented parallel to the extrusion direction after ECAP processing at 300°C Both yield strength and elongation were increased after ECAP processing. The yield strength was higher in the ECAPed alloy processed at 300°C with larger grain size, indicating that the texture strengthening effect was dominant over the strengthening from grain refinement in the ECAPed alloy. The grain refinement may lead to dislocation slip on non-basal plane and grain boundary sliding, which improved the ductility of the ECAPed Mg-Zn-Ca-Mn alloy.

Original languageEnglish
Title of host publicationMagnesium Technology 2011 - Held During TMS 2011 Annual Meeting and Exhibition
PublisherMinerals, Metals and Materials Society
Pages195-198
Number of pages4
ISBN (Print)9781118029367
DOIs
StatePublished - 2011
Externally publishedYes
EventMagnesium Technology 2011 - TMS 2011 Annual Meeting and Exhibition - San Diego, CA, United States
Duration: 27 Feb 20113 Mar 2011

Publication series

NameMagnesium Technology
ISSN (Print)1545-4150

Conference

ConferenceMagnesium Technology 2011 - TMS 2011 Annual Meeting and Exhibition
Country/TerritoryUnited States
CitySan Diego, CA
Period27/02/113/03/11

Keywords

  • Equal channel angular pressing
  • Mechanical properties
  • Mg-Zn-Ca-Mn alloy
  • Microstructure

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