The Structure of Guinier-Preston Zones in an Mg-2 at%Gd-1 at%Zn Alloy Studied by Transmission Electron Microscopy

• Nishijima Masahiko

  Institute for Materials Research, Tohoku University

• Hiraga Kenji

  Institute for Materials Research, Tohoku University

• Yamasaki Michiaki

  Department of Materials Science and Engineering, Kumamoto University

• Kawamura Yoshihiko

  Department of Materials Science and Engineering, Kumamoto University

抄録

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-2 at%Gd-1 at%Zn (Mg₉₇Gd₂Zn₁) alloy aged at 200°C for 150 hrs. 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 of Mg atoms.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 49 (1), 227-229, 2008

  公益社団法人 日本金属学会

キーワード

• Guinier-Preston zone
• GP-zone
• magnesium-gadolinium-zinc
• transmission electron microscopy
• precipitate

詳細情報

• CRID: 1390001204249154816
• NII論文ID: 130004453762
• DOI: 10.2320/matertrans.mep2007257
• ISSN: 13475320
• ISSN: 13459678
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/49/1/49_MEP2007257/_pdf
• 本文言語コード: en
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