Underlying slip/twinning activities of Mg-xGd alloys investigated by modified lattice rotation analysis

Biaobiao Yang, Chenying Shi, Xianjue Ye, Jianwei Teng, Ruilin Lai, Yujie Cui, Dikai Guan, Hongwei Cui, Yunping Li, Akihiko Chiba

Research output: Contribution to journalArticlepeer-review

Abstract

The inconsistencies regarding the fundamental correlation between Gd content and slip (twinning) activities of Mg alloys appeal further investigations. However, the traditional slip dislocations analysis by TEM is time-consuming, and that by SEM/EBSD cannot recognize the partial slip modes. These urge a more efficient and comprehensive approach to easily distinguish all potential slip modes occurred concurrently in alloy matrix. Here we report a modified lattice rotation analysis that can distinguish all slip systems and provide statistical results for slip activities in Mg alloy matrix. Using this method, the high ductility of Mg-Gd alloy ascribed to the enhanced non-basal slips, cross-slip, and postponed twinning activities by Gd addition is quantitatively clarified.

Original languageEnglish
JournalJournal of Magnesium and Alloys
DOIs
Publication statusAccepted/In press - 2021

Keywords

  • Grain boundary segregation
  • Mg-Gd alloy
  • Modified lattice rotation analysis
  • Non-basal slips
  • Postponed twinning

ASJC Scopus subject areas

  • Mechanics of Materials
  • Metals and Alloys

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