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Microstructure and mechanical properties of an extruded Mg-1.58Zn-0.52Gd alloy

  • M. G. Jiang*
  • , J. C. Chen
  • , H. Yan
  • , C. Xu
  • , T. Nakata
  • , S. Kamado
  • *Corresponding author for this work
  • CAS - Institute of Metal Research
  • University of Chinese Academy of Sciences
  • School of Chemical Engineering and Technology
  • Nagaoka University of Technology

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

Abstract

Mg-1.58Zn-0.52Gd (wt%) alloy was indirectly extruded at different temperatures and the resulting microstructure, texture and mechanical properties were investigated. The alloy extruded at 350 °C exhibited a typical bimodal microstructure, consisting of fine dynamically recrystallized (DRXed) grains of ~3.1 μm and coarse unDRXed grains elongated along the ED with many fine spherical Mg3Zn3Gd2 phase, and a strong [1010] fiber texture, thereby resulting in high yield strength of 283 MPa and low elongation of 10.0%. With increasing extrusion temperature, the yield strength gradually decreased mainly due to increased DRXed grain size from the Hall-Petch relation, and the elongation increased due to the weakened extrusion texture and increased DRX fraction, suppressing crack initiation at twins in coarse unDRXed grains. As a result, the alloy extruded at 400 °C showed yield strength of 161 MPa and elongation of 24.7%.

Original languageEnglish
Title of host publicationMagnesium Technology 2017
EditorsNeale R. Neelameggham, Alok Singh, Kiran N. Solanki, Dmytro Orlov
PublisherSpringer International Publishing
Pages297-301
Number of pages5
ISBN (Print)9783319523910
DOIs
StatePublished - 2017
Externally publishedYes
EventInternational Symposium on Magnesium Technology, 2017 - San Diego, United States
Duration: 26 Feb 20172 Mar 2017

Publication series

NameMinerals, Metals and Materials Series
VolumePart F8
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696

Conference

ConferenceInternational Symposium on Magnesium Technology, 2017
Country/TerritoryUnited States
CitySan Diego
Period26/02/172/03/17

Keywords

  • Extrusion
  • Magnesium alloy
  • Mechanical properties
  • Microstructure

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