Three-dimensional shapes and distributions of long-period stacking ordered structures in Mg97Zn1Gd2 cast alloys characterized by electron tomography

Kazuhisa Sato, Shuhei Matsunaga, Shunya Tashiro, Yohei Yamaguchi, Takanori Kiguchi, Toyohiko J. Konno

研究成果: Article査読

7 被引用数 (Scopus)


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 {112¯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.

ジャーナルMaterials Transactions
出版ステータスPublished - 2015

ASJC Scopus subject areas

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

フィンガープリント 「Three-dimensional shapes and distributions of long-period stacking ordered structures in Mg<sub>97</sub>Zn<sub>1</sub>Gd<sub>2</sub> cast alloys characterized by electron tomography」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。