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Incommensurate grain-boundary atomic structure

Author

Listed:
  • Takehito Seki

    (The University of Tokyo, Yayoi 2-11-16, Bunkyo-ku
    PRESTO, Japan Science and Technology Agency, Kawaguchi)

  • Toshihiro Futazuka

    (The University of Tokyo, Yayoi 2-11-16, Bunkyo-ku)

  • Nobusato Morishige

    (Kyushu R&D Laboratory, Nippon Steel Corporation, 1-1 Tobihatacho, Tobata-ku, Kitakyushu-shi)

  • Ryo Matsubara

    (Steel Research Laboratories, Nippon Steel Corporation, 20-1 Shintomi, Futtsu-shi)

  • Yuichi Ikuhara

    (The University of Tokyo, Yayoi 2-11-16, Bunkyo-ku
    Nanostructures Research Laboratory, Japan Fine Ceramics Center, 2-4-1 Mutsuno, Atsuta-ku)

  • Naoya Shibata

    (The University of Tokyo, Yayoi 2-11-16, Bunkyo-ku
    Nanostructures Research Laboratory, Japan Fine Ceramics Center, 2-4-1 Mutsuno, Atsuta-ku
    The University of Tokyo, Hongo 7-3-1, Bunkyo-ku)

Abstract

Grain-boundary atomic structures of crystalline materials have long been believed to be commensurate with the crystal periodicity of the adjacent crystals. In the present study, we experimentally observed a Σ9 grain-boundary atomic structure of a bcc crystal (Fe-3%Si). It is found that the Σ9 grain-boundary structure is largely reconstructed and forms a dense packing of icosahedral clusters in its core. Combining with the detailed theoretical calculations, the Σ9 grain-boundary atomic structure is discovered to be incommensurate with the adjacent crystal structures. The present findings shed new light on the study of stable grain-boundary atomic structures in crystalline materials.

Suggested Citation

  • Takehito Seki & Toshihiro Futazuka & Nobusato Morishige & Ryo Matsubara & Yuichi Ikuhara & Naoya Shibata, 2023. "Incommensurate grain-boundary atomic structure," Nature Communications, Nature, vol. 14(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-43536-0
    DOI: 10.1038/s41467-023-43536-0
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    References listed on IDEAS

    as
    1. N. Shibata & Y. Kohno & A. Nakamura & S. Morishita & T. Seki & A. Kumamoto & H. Sawada & T. Matsumoto & S. D. Findlay & Y. Ikuhara, 2019. "Atomic resolution electron microscopy in a magnetic field free environment," Nature Communications, Nature, vol. 10(1), pages 1-5, December.
    2. Thorsten Meiners & Timofey Frolov & Robert E. Rudd & Gerhard Dehm & Christian H. Liebscher, 2020. "Observations of grain-boundary phase transformations in an elemental metal," Nature, Nature, vol. 579(7799), pages 375-378, March.
    3. Qiang Zhu & Amit Samanta & Bingxi Li & Robert E. Rudd & Timofey Frolov, 2018. "Predicting phase behavior of grain boundaries with evolutionary search and machine learning," Nature Communications, Nature, vol. 9(1), pages 1-9, December.
    4. Jiake Wei & Bin Feng & Eita Tochigi & Naoya Shibata & Yuichi Ikuhara, 2022. "Direct imaging of the disconnection climb mediated point defects absorption by a grain boundary," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
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