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Ordering of the bcc Phase in a Mg-Sc Binary Alloy by Aging Treatment

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Abstract

In a Mg-Sc system, a bcc (β) phase exists in a high-temperature region, and the quenched β shows drastic age-hardening and shape-memory properties. In addition to the disordered β phase, the ordered β (B2) phase is reported to exist in a low-temperature region. We report that the quenched β phase can be ordered through aging treatment at 573 K. This finding indicates that the mechanical characteristics and shape-memory functionality of β-type Mg-Sc alloys can be controlled by ordering the β phase.

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This work was supported by JSPS KAKENHI (17J10094, 18K14032). A part of this work was carried out by using the facility of NIMS TEM Station. The authors would like to thank Dr. Miyazaki at Tohoku University for advice on TEM observation.

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Authors and Affiliations

  1. Research Center for Structural Materials, National Institute for Materials Science, Tsukuba, 305-0047, Japan

    Yukiko Ogawa & Hidetoshi Somekawa

  2. Department of Materials Science, Graduate School of Engineering, Tohoku University, Sendai, 980-8579, Japan

    Yuji Sutou, Daisuke Ando & Junichi Koike

Authors
  1. Yukiko Ogawa
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  2. Yuji Sutou
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  3. Daisuke Ando
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  4. Junichi Koike
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  5. Hidetoshi Somekawa
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Correspondence to Yukiko Ogawa.

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Manuscript submitted January 9, 2019.

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Ogawa, Y., Sutou, Y., Ando, D. et al. Ordering of the bcc Phase in a Mg-Sc Binary Alloy by Aging Treatment. Metall Mater Trans A 50, 3044–3047 (2019). https://doi.org/10.1007/s11661-019-05260-7

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  • DOI: https://doi.org/10.1007/s11661-019-05260-7

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