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Enhancing the Yield Strength of Casting Eutectic High-Entropy Alloys via Coherent Precipitates

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Abstract

Eutectic high-entropy alloys (EHEAs) have shown good as-cast tensile strength and ductility due to the combination of soft and hard phases. However, the yield strengths of casting EHEAs are less competitive. We here induced precipitation hardening to overcome the above challenge in the casting Ni44Co10Cr12Fe15Al17W2 EHEA. L12 and BCC dual-coherent phases precipitate from the FCC/B2 eutectics of Ni44Co10Cr12Fe15Al17W2, leading to an excellent yield strength of 805 ± 45 MPa with uniform elongation of 17.7 ± 0.9 pct.

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The authors are grateful for the financial support by the National Natural Science Foundation of China (No. 52001266), the Guangdong Basic and Applied Basic Research Foundation (No. 2023A1515012703), the Shanghai “Phosphor” Science Foundation, China (23YF1450900), and Fundamental Research Funds for the Central Universities (No. G2022KY05109).

On behalf of all authors, the corresponding author states that there is no conflict of interest.

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Authors and Affiliations

  1. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an, 710072, P.R. China

    Xin Liu, Zhongsheng Yang, Dingcong Cui, Qingfeng Wu, Zhijun Wang, Junjie Li, Jincheng Wang & Feng He

  2. Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, 518057, P.R. China

    Feng He

  3. Collaborative Innovation Center of Northwestern, Polytechnical University, Shanghai, 201100, P.R. China

    Feng He

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  1. Xin Liu
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  2. Zhongsheng Yang
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  3. Dingcong Cui
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  4. Qingfeng Wu
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  5. Zhijun Wang
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Correspondence to Qingfeng Wu, Jincheng Wang or Feng He.

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Liu, X., Yang, Z., Cui, D. et al. Enhancing the Yield Strength of Casting Eutectic High-Entropy Alloys via Coherent Precipitates. Metall Mater Trans A 54, 4620–4624 (2023). https://doi.org/10.1007/s11661-023-07225-3

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  • DOI: https://doi.org/10.1007/s11661-023-07225-3

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