Three-Dimensional Shapes and Distributions of Long-Period Stacking Ordered Structures in Mg₉₇Zn₁Gd₂ Cast Alloys Characterized by Electron Tomography

• Sato Kazuhisa

  Institute for Materials Research, Tohoku University

• Matsunaga Shuhei

  Depertment of Materials Science, Tohoku University

• Tashiro Shunya

  Depertment of Materials Science, Tohoku University

• Yamaguchi Yohei

  Depertment of Materials Science, Tohoku University

• Kiguchi Takanori

  Institute for Materials Research, Tohoku University

• Konno Toyohiko J.

  Institute for Materials Research, Tohoku University

書誌事項

タイトル別名

• Three-Dimensional Shapes and Distributions of Long-Period Stacking Ordered Structures in Mg₉₇Zn₁Gd₂ Cast Alloys Characterized by Electron Tomography

抄録

Three-dimensional (3D) configurations of 14H long-period stacking ordered (LPSO) structures formed in Mg₉₇Zn₁Gd₂ cast alloys at intermediate stages of the formation process have been studied by single tilt-axis electron tomography using high-angle annular dark-field scanning transmission electron microscopy. Lateral morphology of the 14H LPSO is clearly visualized by reconstructing 3D volumes. An existence of “dent-shaped” area was found in a 3D reconstructed volume for the first time. The edge of LPSO shows a characteristic triangular shape with an angle of 60°, which indicates that the growth front is parallel to {11\bar{2}0}_Mg. It is suggested that in-plane irregular or characteristic shapes are related to the lateral growth mechanism of LPSO. Electron tomography has proven to be an indispensable tool to characterize in-plane structural information of LPSO formed in α-Mg matrix.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 56 (7), 928-932, 2015

  公益社団法人 日本金属学会

キーワード

• long-period stacking ordered (LPSO)
• magnesium-zinc-gadolinium
• electron tomography
• lateral morphology
• lateral growth
• scanning transmission electron microscopy (STEM)

詳細情報

• CRID: 1390001204253548800
• NII論文ID: 130005083565
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.mh201406
• ISSN: 13475320
• ISSN: 13459678
• HANDLE: 11094/89451
• NDL書誌ID: 026564384
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I026564384
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/56/7/56_MH201406/_pdf
• 本文言語コード: en
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