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Substantially enhanced plasticity of bulk metallic glasses by densifying local atomic packing

Author

Listed:
  • Yuan Wu

    (University of Science and Technology Beijing)

  • Di Cao

    (University of Science and Technology Beijing)

  • Yilin Yao

    (University of Science and Technology Beijing)

  • Guosheng Zhang

    (University of Science and Technology Beijing)

  • Jinyue Wang

    (University of Science and Technology Beijing)

  • Leqing Liu

    (University of Science and Technology Beijing)

  • Fengshou Li

    (University of Science and Technology Beijing)

  • Huiyang Fan

    (University of Science and Technology Beijing)

  • Xiongjun Liu

    (University of Science and Technology Beijing)

  • Hui Wang

    (University of Science and Technology Beijing)

  • Xianzhen Wang

    (University of Science and Technology Beijing)

  • Huihui Zhu

    (University of Science and Technology Beijing)

  • Suihe Jiang

    (University of Science and Technology Beijing)

  • Paraskevas Kontis

    (Max-Planck-Institut für Eisenforschung GmbH, Department of Microstructure Physics and Alloy Design)

  • Dierk Raabe

    (Max-Planck-Institut für Eisenforschung GmbH, Department of Microstructure Physics and Alloy Design)

  • Baptiste Gault

    (Max-Planck-Institut für Eisenforschung GmbH, Department of Microstructure Physics and Alloy Design
    Imperial College London, Kensington)

  • Zhaoping Lu

    (University of Science and Technology Beijing)

Abstract

Introducing regions of looser atomic packing in bulk metallic glasses (BMGs) was reported to facilitate plastic deformation, rendering BMGs more ductile at room temperature. Here, we present a different alloy design approach, namely, doping the nonmetallic elements to form densely packed motifs. The enhanced structural fluctuations in Ti-, Zr- and Cu-based BMG systems leads to improved strength and renders these solutes’ atomic neighborhoods more prone to plastic deformation at an increased critical stress. As a result, we simultaneously increased the compressive plasticity (from ∼8% to unfractured), strength (from ∼1725 to 1925 MPa) and toughness (from 87 ± 10 to 165 ± 15 MPa√m), as exemplarily demonstrated for the Zr20Cu20Hf20Ti20Ni20 BMG. Our study advances the understanding of the atomic-scale origin of structure-property relationships in amorphous solids and provides a new strategy for ductilizing BMG without sacrificing strength.

Suggested Citation

  • Yuan Wu & Di Cao & Yilin Yao & Guosheng Zhang & Jinyue Wang & Leqing Liu & Fengshou Li & Huiyang Fan & Xiongjun Liu & Hui Wang & Xianzhen Wang & Huihui Zhu & Suihe Jiang & Paraskevas Kontis & Dierk Ra, 2021. "Substantially enhanced plasticity of bulk metallic glasses by densifying local atomic packing," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-26858-9
    DOI: 10.1038/s41467-021-26858-9
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    References listed on IDEAS

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    1. S. V. Ketov & Y. H. Sun & S. Nachum & Z. Lu & A. Checchi & A. R. Beraldin & H. Y. Bai & W. H. Wang & D. V. Louzguine-Luzgin & M. A. Carpenter & A. L. Greer, 2015. "Rejuvenation of metallic glasses by non-affine thermal strain," Nature, Nature, vol. 524(7564), pages 200-203, August.
    2. Yue Fan & Takuya Iwashita & Takeshi Egami, 2014. "How thermally activated deformation starts in metallic glass," Nature Communications, Nature, vol. 5(1), pages 1-7, December.
    3. J. Pan & Yu. P. Ivanov & W. H. Zhou & Y. Li & A. L. Greer, 2020. "Strain-hardening and suppression of shear-banding in rejuvenated bulk metallic glass," Nature, Nature, vol. 578(7796), pages 559-562, February.
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    Cited by:

    1. Ge Wu & Sida Liu & Qing Wang & Jing Rao & Wenzhen Xia & Yong-Qiang Yan & Jürgen Eckert & Chang Liu & En Ma & Zhi-Wei Shan, 2023. "Substantially enhanced homogeneous plastic flow in hierarchically nanodomained amorphous alloys," Nature Communications, Nature, vol. 14(1), pages 1-8, December.

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