IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v11y2020i1d10.1038_s41467-020-16085-z.html
   My bibliography  Save this article

Dual heterogeneous structures lead to ultrahigh strength and uniform ductility in a Co-Cr-Ni medium-entropy alloy

Author

Listed:
  • X. H. Du

    (Hong Kong Institute for Advanced Study, City University of Hong Kong
    Shenyang Aerospace University)

  • W. P. Li

    (Hong Kong Institute for Advanced Study, City University of Hong Kong)

  • H. T. Chang

    (Shenyang Aerospace University)

  • T. Yang

    (Hong Kong Institute for Advanced Study, City University of Hong Kong)

  • G. S. Duan

    (Shenyang Aerospace University)

  • B. L. Wu

    (Shenyang Aerospace University)

  • J. C. Huang

    (Hong Kong Institute for Advanced Study, City University of Hong Kong
    National Sun Yat-Sen University)

  • F. R. Chen

    (Hong Kong Institute for Advanced Study, City University of Hong Kong)

  • C. T. Liu

    (Hong Kong Institute for Advanced Study, City University of Hong Kong)

  • W. S. Chuang

    (National Sun Yat-Sen University)

  • Y. Lu

    (Beijing University of Technology)

  • M. L. Sui

    (Beijing University of Technology)

  • E. W. Huang

    (National Chiao Tung University)

Abstract

Alloys with ultra-high strength and sufficient ductility are highly desired for modern engineering applications but difficult to develop. Here we report that, by a careful controlling alloy composition, thermomechanical process, and microstructural feature, a Co-Cr-Ni-based medium-entropy alloy (MEA) with a dual heterogeneous structure of both matrix and precipitates can be designed to provide an ultra-high tensile strength of 2.2 GPa and uniform elongation of 13% at ambient temperature, properties that are much improved over their counterparts without the heterogeneous structure. Electron microscopy characterizations reveal that the dual heterogeneous structures are composed of a heterogeneous matrix with both coarse grains (10∼30 μm) and ultra-fine grains (0.5∼2 μm), together with heterogeneous L12-structured nanoprecipitates ranging from several to hundreds of nanometers. The heterogeneous L12 nanoprecipitates are fully coherent with the matrix, minimizing the elastic misfit strain of interfaces, relieving the stress concentration during deformation, and playing an active role in enhanced ductility.

Suggested Citation

  • X. H. Du & W. P. Li & H. T. Chang & T. Yang & G. S. Duan & B. L. Wu & J. C. Huang & F. R. Chen & C. T. Liu & W. S. Chuang & Y. Lu & M. L. Sui & E. W. Huang, 2020. "Dual heterogeneous structures lead to ultrahigh strength and uniform ductility in a Co-Cr-Ni medium-entropy alloy," Nature Communications, Nature, vol. 11(1), pages 1-7, December.
  • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-16085-z
    DOI: 10.1038/s41467-020-16085-z
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41467-020-16085-z
    File Function: Abstract
    Download Restriction: no

    File URL: https://libkey.io/10.1038/s41467-020-16085-z?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Chengyi Yu & Kun Lin & Qinghua Zhang & Huihui Zhu & Ke An & Yan Chen & Dunji Yu & Tianyi Li & Xiaoqian Fu & Qian Yu & Li You & Xiaojun Kuang & Yili Cao & Qiang Li & Jinxia Deng & Xianran Xing, 2024. "An isotropic zero thermal expansion alloy with super-high toughness," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    2. Tong Li & Tianwei Liu & Shiteng Zhao & Yan Chen & Junhua Luan & Zengbao Jiao & Robert O. Ritchie & Lanhong Dai, 2023. "Ultra-strong tungsten refractory high-entropy alloy via stepwise controllable coherent nanoprecipitations," Nature Communications, Nature, vol. 14(1), pages 1-7, December.
    3. Wenjin Guo & Guangfang Li & Chengbo Bai & Qiong Liu & Fengxi Chen & Rong Chen, 2024. "General synthesis and atomic arrangement identification of ordered Bi–Pd intermetallics with tunable electrocatalytic CO2 reduction selectivity," Nature Communications, Nature, vol. 15(1), pages 1-10, December.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-16085-z. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.