The structure of guinier-preston zones in an Mg-2at%Gd-1 at%Zn alloy studied by transmission electron microscopy

Masahiko Nishijima, Kenji Hiraga, Michiaki Yamasaki, Yoshihiko Kawamura

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

Planar Guinier-Preston zones (GP-zones) parallel to a basal plane of an Mg hexagonal lattice are found together with β′ and β1 precipitates, which have been found in Mg-Gd alloys, in an Mg-2at%Gd-1 at%Zn (Mg97Gd2Zn1) alloy aged at 200°C for 150hrs. From the combination of high-resolution transmission electron microscopy (HRTEM) and high-angle annular detector dark field scanning transmission electron microscopy (HAADF-STEM), we can determine the structure of the GP-zone, in which Gd and/or Zn atoms occupy at ordered positions in two close-packed planes sandwiching a close-packed plane ot Mg atoms.

Original languageEnglish
Pages (from-to)227-229
Number of pages3
JournalMaterials Transactions
Volume49
Issue number1
DOIs
Publication statusPublished - 2008 Jan 1

Keywords

  • GP-zone
  • Guinier-Preston zone
  • Magnesium-gadolinium-zinc
  • Precipitate
  • Transmission electron microscopy

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'The structure of guinier-preston zones in an Mg-2at%Gd-1 at%Zn alloy studied by transmission electron microscopy'. Together they form a unique fingerprint.

  • Cite this