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Grain rotation mediated by grain boundary dislocations in nanocrystalline platinum

Author

Listed:
  • Lihua Wang

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

  • Jiao Teng

    (University of Science and Technology Beijing)

  • Pan Liu

    (WPI Advanced Institute for Materials Research, Tohoku University)

  • Akihiko Hirata

    (WPI Advanced Institute for Materials Research, Tohoku University)

  • En Ma

    (Johns Hopkins University)

  • Ze Zhang

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

Grain rotation is a well-known phenomenon during high (homologous) temperature deformation and recrystallization of polycrystalline materials. In recent years, grain rotation has also been proposed as a plasticity mechanism at low temperatures (for example, room temperature for metals), especially for nanocrystalline grains with diameter d less than ~15 nm. Here, in tensile-loaded Pt thin films under a high-resolution transmission electron microscope, we show that the plasticity mechanism transitions from cross-grain dislocation glide in larger grains (d>6 nm) to a mode of coordinated rotation of multiple grains for grains with d

Suggested Citation

  • Lihua Wang & Jiao Teng & Pan Liu & Akihiko Hirata & En Ma & Ze Zhang & Mingwei Chen & Xiaodong Han, 2014. "Grain rotation mediated by grain boundary dislocations in nanocrystalline platinum," Nature Communications, Nature, vol. 5(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms5402
    DOI: 10.1038/ncomms5402
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    Cited by:

    1. Chang Liu & Wenjun Lu & Wenzhen Xia & Chaowei Du & Ziyuan Rao & James P. Best & Steffen Brinckmann & Jian Lu & Baptiste Gault & Gerhard Dehm & Ge Wu & Zhiming Li & Dierk Raabe, 2022. "Massive interstitial solid solution alloys achieve near-theoretical strength," Nature Communications, Nature, vol. 13(1), pages 1-9, December.

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