Microstructure and Its Evolution of Solute-Enriched Stacking Faults in Kink-Deformed Mg₉₇Zn₁Y₂

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  • Zhao Yifang
    Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
  • Gao Hongye
    The Ultramicroscopy Research Center, Kyushu University
  • Guo Zimeng
    Faculty of Engineering Sciences, Kyushu University
  • Egusa Daisuke
    Department of Materials Engineering, The University of Tokyo
  • Abe Eiji
    Department of Materials Engineering, The University of Tokyo
  • Hata Satoshi
    The Ultramicroscopy Research Center, Kyushu University Faculty of Engineering Sciences, Kyushu University

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タイトル別名
  • Microstructure and Its Evolution of Solute-Enriched Stacking Faults in Kink-Deformed Mg<sub>97</sub>Zn<sub>1</sub>Y<sub>2</sub>

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<p>Microstructure and its evolution of solute-enriched stacking faults (SESFs) in kink-deformed Mg–Zn–Y alloys have been investigated by scanning transmission electron microscopy (STEM). Mass-thickness contrast in annular dark-field (ADF) STEM images and diffraction contrast in weak-beam dark-field (WBDF) STEM images visualized locations of solute-enriched regions and dislocations, respectively. Most of the SESFs are located at or near kink boundaries, and a variety of arrangements and morphology of the SESFs are followed by dislocations with the c component of α-Mg matrix and small-angle lattice rotations along the c-axis as well as the a-b axes. As notable microstructural features of the SESFs, rectangular-shaped and step-shaped arrangements of the SESFs, observed respectively before and after a heat treatment at 573 K for 168 h, were observed in detail, and their formation processes were discussed.</p>

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  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 65 (3), 274-281, 2024-03-01

    公益社団法人 日本金属学会

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