Study on the planar segregation of solute atoms in Mg-Al-Gd alloy

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

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Solute segregation plays an important role in forming long-period stacking ordered (LPSO) structure in Mg-M-RE (M: Zn, Ni etc., RE: Y, Gd, etc.) alloys. In this work, the planar segregation in Mg-Al-Gd alloy is characterized by high angle annular dark field (HAADF)-scanning transmission electron microscopy (STEM) and three-dimensional atom probe (3DAP). It is found that the planar segregation can be considered as Guinier-Preston (G.P.) zone, since there is no planar fault or ordered structure within the segregation. The G.P. zone mainly enriches with Gd atoms based on 3DAP data. Furthermore, the segregation behaviour is examined by first-principles calculation.

Original languageEnglish
Pages (from-to)45-49
Number of pages5
JournalScripta Materialia
Volume150
DOIs
Publication statusPublished - 2018 Jun 1

Keywords

  • 3DAP
  • First-principles
  • HAADF-STEM
  • Magnesium alloy
  • Segregation

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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