Twin-like fault in Mg–9.8 wt%Sn alloy

Chaoqiang Liu, Houwen Chen, Nick Wilson, Jian Feng Nie

Research output: Contribution to journalArticleResearchpeer-review

4 Citations (Scopus)

Abstract

Stacking faults in magnesium alloys have received considerable attention in recent years, but only intrinsic and extrinsic faults are studied at experimental and computational levels. Twin-like fault, designated as T2 fault, has received little attention. In this study, we report for the first time the occurrence of T2 fault in Mg–9.8 wt%Sn alloy. The T2 fault and solute segregation in regions surrounding the fault were characterized using aberration-corrected scanning transmission electron microscopy and first-principles calculations. Sn atoms orderly distribute in the fault plane and its neighbouring planes, which drastically decreases the T2 fault energy.

Original languageEnglish
Pages (from-to)89-93
Number of pages5
JournalScripta Materialia
Volume155
DOIs
Publication statusPublished - 1 Oct 2018

Keywords

  • DFT
  • HAADF-STEM
  • Magnesium alloys
  • Segregation
  • Stacking fault

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