Stabilization of Stacking Faults and a Long Period Stacking Phase Dispersed in a-Mg Crystalline Grains of Mg-0.7 at%Zn-1.4at%Y Alloy

Jongbeom Lee, Kazuhisa Sato, Toyohiko J. Konno, Kenji Hiraga

研究成果: ジャーナルへの寄稿学術論文査読

48 被引用数 (Scopus)

抄録

Mg-0.7 at%Zn-1.4 at%Y alloys annealed at low temperatures after quenching in water from 520°C were studied by high-resolution transmission electron microscopy (HRTEM) and high-angle annular detector dark-field scanning transmission electron microscopy (HAADF-STEM). Stacking faults, thin bands of a 14H-type long period stacking (LPS) phase and relatively thick bands of LPS were precipitated in α-Mg crystalline grains by annealing at 300°C, 400°C and 500°, respectively. The precipitation of stacking faults, LPS phase and a supersaturated solid solution without any precipitates were reversibly transformed by annealing at low temperatures. It can be concluded that the stacking faults and LPS phase are stabilized by the segregation ot Zn and Y from a supersaturated solid solution.

本文言語英語
ページ(範囲)222-225
ページ数4
ジャーナルMaterials Transactions
50
1
DOI
出版ステータス出版済み - 2009 1月

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