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Strong crystal size effect on deformation twinning

Author

Listed:
  • Qian Yu

    (Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano), State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University)

  • Zhi-Wei Shan

    (Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano), State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University
    Hysitron Incorporated, 10025 Valley View Road)

  • Ju Li

    (University of Pennsylvania)

  • Xiaoxu Huang

    (Danish-Chinese Center for Nanometals, Risø National Laboratory for Sustainable Energy, Technical University of Denmark)

  • Lin Xiao

    (Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano), State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University)

  • Jun Sun

    (Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano), State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University)

  • Evan Ma

    (Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano), State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University
    The Johns Hopkins University)

Abstract

Crystal deformation to scale There are two main mechanisms at play when a crystal undergoes deformation: ordinary dislocation plasticity and deformation twinning. While the former is known to be dependent on the size of the crystal, hence influencing sample strength at the nanoscale, the latter's size dependence has not been explored to date. Ju Li and colleagues show, using microcompression and nanoindentation experiments, that deformation twinning is completely suppressed in crystals smaller than a micrometre in size, giving way to ordinary dislocation plasticity as the only deformation mode. This may be because deformation twinning is a collective phenomenon that cannot operate for small crystal sizes. The discovery paves the way for new approaches to manipulating the mechanical properties of materials at the microscale.

Suggested Citation

  • Qian Yu & Zhi-Wei Shan & Ju Li & Xiaoxu Huang & Lin Xiao & Jun Sun & Evan Ma, 2010. "Strong crystal size effect on deformation twinning," Nature, Nature, vol. 463(7279), pages 335-338, January.
    • Handle: RePEc:nat:nature:v:463:y:2010:i:7279:d:10.1038_nature08692
    DOI: 10.1038/nature08692
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    Cited by:

    1. Lin Jiang & Mingyu Gong & Jian Wang & Zhiliang Pan & Xin Wang & Dalong Zhang & Y. Morris Wang & Jim Ciston & Andrew M. Minor & Mingjie Xu & Xiaoqing Pan & Timothy J. Rupert & Subhash Mahajan & Enrique, 2022. "Visualization and validation of twin nucleation and early-stage growth in magnesium," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    2. Chongle Zhang & Xiangyun Bao & Mengyuan Hao & Wei Chen & Dongdong Zhang & Dong Wang & Jinyu Zhang & Gang Liu & Jun Sun, 2022. "Hierarchical nano-martensite-engineered a low-cost ultra-strong and ductile titanium alloy," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    3. Chongle Zhang & Shuaiyang Liu & Jinyu Zhang & Dongdong Zhang & Jie Kuang & Xiangyun Bao & Gang Liu & Jun Sun, 2023. "Trifunctional nanoprecipitates ductilize and toughen a strong laminated metastable titanium alloy," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    4. Li Zhong & Yin Zhang & Xiang Wang & Ting Zhu & Scott X. Mao, 2024. "Atomic-scale observation of nucleation- and growth-controlled deformation twinning in body-centered cubic nanocrystals," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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