Domain structures and the transitional state of ordering in long-period stacking ordered (LPSO) structures in Mg–Al–Gd alloy

Xin Fu Gu, Tadashi Furuhara, Leng Chen, Ping Yang

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The transitional state of ordering in the long-period stacking ordered (LPSO) structure in Mg–Al–Gd alloy has been investigated by scanning transmission electron microscopy. It is found that the domains are the origin of observed transitional state. Three new patterns of clusters at this state can be fully explained by the superimposition of L12 type clusters located in different domains. The domains are further verified by different tilted views. Growth of preferred domains during ageing process will result in final ordered LPSO structure. Based on the idea of domains, less ordered LPSO structure in other dilute alloys can be also understood.

Original languageEnglish
Pages (from-to)19-23
Number of pages5
JournalScripta Materialia
Volume187
DOIs
Publication statusPublished - 2020 Oct

Keywords

  • Domains
  • HAADF-STEM
  • LPSO structure
  • Magnesium alloy

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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