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Data-driven electron-diffraction approach reveals local short-range ordering in CrCoNi with ordering effects

Author

Listed:
  • Haw-Wen Hsiao

    (University of Illinois Urbana-Champaign
    University of Illinois Urbana-Champaign)

  • Rui Feng

    (Oak Ridge National Laboratory)

  • Haoyang Ni

    (University of Illinois Urbana-Champaign
    University of Illinois Urbana-Champaign)

  • Ke An

    (Oak Ridge National Laboratory)

  • Jonathan D. Poplawsky

    (Oak Ridge National Laboratory)

  • Peter K. Liaw

    (The University of Tennessee Knoxville)

  • Jian-Min Zuo

    (University of Illinois Urbana-Champaign
    University of Illinois Urbana-Champaign)

Abstract

The exceptional mechanical strength of medium/high-entropy alloys has been attributed to hardening in random solid solutions. Here, we evidence non-random chemical mixing in a CrCoNi alloy, resulting from short-range ordering. A data-mining approach of electron nanodiffraction enabled the study, which is assisted by neutron scattering, atom probe tomography, and diffraction simulation using first-principles theory models. Two samples, one homogenized and one heat-treated, are observed. In both samples, results reveal two types of short-range-order inside nanoclusters that minimize the Cr–Cr nearest neighbors (L12) or segregate Cr on alternating close-packed planes (L11). The L11 is predominant in the homogenized sample, while the L12 formation is promoted by heat-treatment, with the latter being accompanied by a dramatic change in dislocation-slip behavior. These findings uncover short-range order and the resulted chemical heterogeneities behind the mechanical strength in CrCoNi, providing general opportunities for atomistic-structure study in concentrated alloys for the design of strong and ductile materials.

Suggested Citation

  • Haw-Wen Hsiao & Rui Feng & Haoyang Ni & Ke An & Jonathan D. Poplawsky & Peter K. Liaw & Jian-Min Zuo, 2022. "Data-driven electron-diffraction approach reveals local short-range ordering in CrCoNi with ordering effects," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-34335-0
    DOI: 10.1038/s41467-022-34335-0
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    Cited by:

    1. Vinícius P. Bacurau & Pedro A. F. P. Moreira & Gustavo Bertoli & Angelo F. Andreoli & Eric Mazzer & Flávio F. Assis & Piter Gargarella & Guilherme Koga & Guilherme C. Stumpf & Santiago J. A. Figueroa , 2024. "Comprehensive analysis of ordering in CoCrNi and CrNi2 alloys," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    2. Yang Yang & Sheng Yin & Qin Yu & Yingxin Zhu & Jun Ding & Ruopeng Zhang & Colin Ophus & Mark Asta & Robert O. Ritchie & Andrew M. Minor, 2024. "Rejuvenation as the origin of planar defects in the CrCoNi medium entropy alloy," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    3. Ying Han & Hangman Chen & Yongwen Sun & Jian Liu & Shaolou Wei & Bijun Xie & Zhiyu Zhang & Yingxin Zhu & Meng Li & Judith Yang & Wen Chen & Penghui Cao & Yang Yang, 2024. "Ubiquitous short-range order in multi-principal element alloys," Nature Communications, Nature, vol. 15(1), pages 1-13, December.
    4. Yue Li & Ye Wei & Zhangwei Wang & Xiaochun Liu & Timoteo Colnaghi & Liuliu Han & Ziyuan Rao & Xuyang Zhou & Liam Huber & Raynol Dsouza & Yilun Gong & Jörg Neugebauer & Andreas Marek & Markus Rampp & S, 2023. "Quantitative three-dimensional imaging of chemical short-range order via machine learning enhanced atom probe tomography," Nature Communications, Nature, vol. 14(1), pages 1-11, December.

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