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Tailoring heterogeneities in high-entropy alloys to promote strength–ductility synergy

Author

Listed:
  • Evan Ma

    (Johns Hopkins University)

  • Xiaolei Wu

    (Chinese Academy of Sciences)

Abstract

Conventional alloys are usually based on a single host metal. Recent high-entropy alloys (HEAs), in contrast, employ multiple principal elements. The strength of HEAs is considerably higher than traditional solid solutions, as the many constituents lead to a rugged energy landscape that increases the resistance to dislocation motion, which can also be retarded by other heterogeneities. The wide variety of nanostructured heterogeneities in HEAs, including those generated on the fly during tensile straining, also offer elevated strain-hardening capability that promotes uniform tensile ductility. Citing recent examples, this review explores the multiple levels of heterogeneities in multi-principal-element alloys that contribute to lattice friction and back stress hardening, as a general strategy towards strength–ductility synergy beyond current benchmark ranges.

Suggested Citation

  • Evan Ma & Xiaolei Wu, 2019. "Tailoring heterogeneities in high-entropy alloys to promote strength–ductility synergy," Nature Communications, Nature, vol. 10(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-13311-1
    DOI: 10.1038/s41467-019-13311-1
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    Cited by:

    1. Jae Bok Seol & Won-Seok Ko & Seok Su Sohn & Min Young Na & Hye Jung Chang & Yoon-Uk Heo & Jung Gi Kim & Hyokyung Sung & Zhiming Li & Elena Pereloma & Hyoung Seop Kim, 2022. "Mechanically derived short-range order and its impact on the multi-principal-element alloys," Nature Communications, Nature, vol. 13(1), pages 1-13, December.
    2. Jing Wang & Ping Jiang & Fuping Yuan & Xiaolei Wu, 2022. "Chemical medium-range order in a medium-entropy alloy," Nature Communications, Nature, vol. 13(1), pages 1-6, December.
    3. 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.
    4. Xingjia He & Yu Zhang & Xinlei Gu & Jiangwei Wang & Jinlei Qi & Jun Hao & Longpeng Wang & Hao Huang & Mao Wen & Kan Zhang & Weitao Zheng, 2023. "Pt-induced atomic-level tailoring towards paracrystalline high-entropy alloy," Nature Communications, Nature, vol. 14(1), pages 1-13, December.

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