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Ultra-large single crystals by abnormal grain growth

Author

Listed:
  • Tomoe Kusama

    (Tohoku University)

  • Toshihiro Omori

    (Tohoku University)

  • Takashi Saito

    (Tohoku University)

  • Sumio Kise

    (Furukawa Techno Material Co., Ltd.)

  • Toyonobu Tanaka

    (Furukawa Techno Material Co., Ltd.)

  • Yoshikazu Araki

    (Kyoto University)

  • Ryosuke Kainuma

    (Tohoku University)

Abstract

Producing a single crystal is expensive because of low mass productivity. Therefore, many metallic materials are being used in polycrystalline form, even though material properties are superior in a single crystal. Here we show that an extraordinarily large Cu-Al-Mn single crystal can be obtained by abnormal grain growth (AGG) induced by simple heat treatment with high mass productivity. In AGG, the sub-boundary energy introduced by cyclic heat treatment (CHT) is dominant in the driving pressure, and the grain boundary migration rate is accelerated by repeating the low-temperature CHT due to the increase of the sub-boundary energy. With such treatment, fabrication of single crystal bars 70 cm in length is achieved. This result ensures that the range of applications of shape memory alloys will spread beyond small-sized devices to large-scale components and may enable new applications of single crystals in other metallic and ceramics materials having similar microstructural features.

Suggested Citation

  • Tomoe Kusama & Toshihiro Omori & Takashi Saito & Sumio Kise & Toyonobu Tanaka & Yoshikazu Araki & Ryosuke Kainuma, 2017. "Ultra-large single crystals by abnormal grain growth," Nature Communications, Nature, vol. 8(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_s41467-017-00383-0
    DOI: 10.1038/s41467-017-00383-0
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    Cited by:

    1. Stefano Stassi & Ido Cooperstein & Mauro Tortello & Candido Fabrizio Pirri & Shlomo Magdassi & Carlo Ricciardi, 2021. "Reaching silicon-based NEMS performances with 3D printed nanomechanical resonators," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
    2. Sheng Xu & Takumi Odaira & Shunsuke Sato & Xiao Xu & Toshihiro Omori & Stefanus Harjo & Takuro Kawasaki & Hanuš Seiner & Kristýna Zoubková & Yasukazu Murakami & Ryosuke Kainuma, 2022. "Non-Hookean large elastic deformation in bulk crystalline metals," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    3. Seunguk Song & Aram Yoon & Sora Jang & Jason Lynch & Jihoon Yang & Juwon Han & Myeonggi Choe & Young Ho Jin & Cindy Yueli Chen & Yeryun Cheon & Jinsung Kwak & Changwook Jeong & Hyeonsik Cheong & Deep , 2023. "Fabrication of p-type 2D single-crystalline transistor arrays with Fermi-level-tuned van der Waals semimetal electrodes," Nature Communications, Nature, vol. 14(1), pages 1-14, December.

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