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In situ atomic-scale observation of continuous and reversible lattice deformation beyond the elastic limit

Author

Listed:
  • Lihua Wang

    (Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology)

  • Pan Liu

    (Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology
    WPI Advanced Institute for Materials Research, Tohoku University)

  • Pengfei Guan

    (WPI Advanced Institute for Materials Research, Tohoku University
    Johns Hopkins University)

  • Mingjie Yang

    (Tsinghua University)

  • Jialin Sun

    (Tsinghua University)

  • Yongqiang Cheng

    (Johns Hopkins University)

  • Akihiko Hirata

    (WPI Advanced Institute for Materials Research, Tohoku University)

  • Ze Zhang

    (Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology
    State Key Laboratory of Silicon Materials, Zhejiang University)

  • Evan Ma

    (Johns Hopkins University)

  • Mingwei Chen

    (WPI Advanced Institute for Materials Research, Tohoku University)

  • Xiaodong Han

    (Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology)

Abstract

The elastic strain sustainable in crystal lattices is usually limited by the onset of inelastic yielding mediated by discrete dislocation activity, displacive deformation twinning and stress-induced phase transformations, or fracture associated with flaws. Here we report a continuous and gradual lattice deformation in bending nickel nanowires to a reversible shear strain as high as 34.6%, which is approximately four times that of the theoretical elastic strain limit for unconstrained loading. The functioning deformation mechanism was revealed on the atomic scale by an in situ nanowire bending experiments inside a transmission electron microscope. The complete continuous lattice straining process of crystals has been witnessed in its entirety for the straining path, which starts from the face-centred cubic lattice, transitions through the orthogonal path to reach a body-centred tetragonal structure and finally to a re-oriented face-centred cubic structure.

Suggested Citation

  • Lihua Wang & Pan Liu & Pengfei Guan & Mingjie Yang & Jialin Sun & Yongqiang Cheng & Akihiko Hirata & Ze Zhang & Evan Ma & Mingwei Chen & Xiaodong Han, 2013. "In situ atomic-scale observation of continuous and reversible lattice deformation beyond the elastic limit," Nature Communications, Nature, vol. 4(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms3413
    DOI: 10.1038/ncomms3413
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    Cited by:

    1. Chengpeng Yang & Bozhao Zhang & Libo Fu & Zhanxin Wang & Jiao Teng & Ruiwen Shao & Ziqi Wu & Xiaoxue Chang & Jun Ding & Lihua Wang & Xiaodong Han, 2023. "Chemical inhomogeneity–induced profuse nanotwinning and phase transformation in AuCu nanowires," Nature Communications, Nature, vol. 14(1), pages 1-12, December.

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