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In situ observation of crystal rotation in Ni-based superalloy during additive manufacturing process

Author

Listed:
  • Dongsheng Zhang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Wei Liu

    (AECC Beijing Institute of Aeronautical Materials)

  • Yuxiao Li

    (The Peac Institute of Multiscale Sciences)

  • Darui Sun

    (Chinese Academy of Sciences)

  • Yu Wu

    (AECC Beijing Institute of Aeronautical Materials)

  • Shengnian Luo

    (The Peac Institute of Multiscale Sciences)

  • Sen Chen

    (China Academy of Engineering Physics)

  • Ye Tao

    (Chinese Academy of Sciences)

  • Bingbing Zhang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

Abstract

Understanding the dynamic process of epitaxial microstructure forming in laser additive manufacturing is very important for achieving products with a single crystalline texture. Here, we perform in situ, real-time synchrotron Laue diffraction experiments to capture the microstructural evolution of nickel-based single-crystal superalloys during the rapid laser remelting process. In situ synchrotron radiation Laue diffraction characterises the crystal rotation behaviour and stray grain formation process. With a complementary thermomechanical coupled finite element simulation and molecular dynamics simulation, we identify that the crystal rotation is governed by the localised heating/cooling heterogeneity-induced deformation gradient and recognise that the sub-grain rotation caused by rapid dislocation movement could be the origin of granular stray grains at the bottom of the melt pool.

Suggested Citation

  • Dongsheng Zhang & Wei Liu & Yuxiao Li & Darui Sun & Yu Wu & Shengnian Luo & Sen Chen & Ye Tao & Bingbing Zhang, 2023. "In situ observation of crystal rotation in Ni-based superalloy during additive manufacturing process," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-38727-8
    DOI: 10.1038/s41467-023-38727-8
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    References listed on IDEAS

    as
    1. Minglei Qu & Qilin Guo & Luis I. Escano & Ali Nabaa & S. Mohammad H. Hojjatzadeh & Zachary A. Young & Lianyi Chen, 2022. "Publisher Correction: Controlling process instability for defect lean metal additive manufacturing," Nature Communications, Nature, vol. 13(1), pages 1-1, December.
    2. C. J. Todaro & M. A. Easton & D. Qiu & D. Zhang & M. J. Bermingham & E. W. Lui & M. Brandt & D. H. StJohn & M. Qian, 2020. "Grain structure control during metal 3D printing by high-intensity ultrasound," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    3. Minglei Qu & Qilin Guo & Luis I. Escano & Ali Nabaa & S. Mohammad H. Hojjatzadeh & Zachary A. Young & Lianyi Chen, 2022. "Controlling process instability for defect lean metal additive manufacturing," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
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