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Dual-phase nano-glass-hydrides overcome the strength-ductility trade-off and magnetocaloric bottlenecks of rare earth based amorphous alloys

Author

Listed:
  • Liliang Shao

    (Southeast University
    Songshan Lake Materials Laboratory
    Chinese Academy of Sciences)

  • Qiang Luo

    (Southeast University)

  • Mingjie Zhang

    (Southeast University)

  • Lin Xue

    (Hohai University)

  • Jingxian Cui

    (Southeast University)

  • Qianzi Yang

    (Southeast University)

  • Haibo Ke

    (Songshan Lake Materials Laboratory)

  • Yao Zhang

    (Southeast University)

  • Baolong Shen

    (Southeast University)

  • Weihua Wang

    (Songshan Lake Materials Laboratory
    Chinese Academy of Sciences)

Abstract

Metal-hydrogen systems have attracted intense interest for diverse energy-related applications. However, metals usually reduce their ductility after hydrogenation. Here, we show that hydrogen can take the form of nano-sized ordered hydrides (NOH) homogeneously dispersed in a stable glassy shell, leading to remarkable enhancement in both strength and ductility. The yield strength is enhanced by 44% and the plastic strain is substantially improved from almost zero to over 70%, which is attributed to the created NOH and their interplay with the glassy shell. Moreover, the hydride-glass composite GdCoAlH possesses a giant magnetic entropy change (−ΔSM) of 18.7 J kg−1K−1 under a field change of 5 T, which is 105.5% larger than the hydrogen-free sample and is the largest value among amorphous alloys and related composites. The prominent ΔSM-ductility combination overcomes the bottlenecks of amorphous alloys as magnetic refrigerants. These results provide a promising strategy for property breakthrough of structural-functional alloys.

Suggested Citation

  • Liliang Shao & Qiang Luo & Mingjie Zhang & Lin Xue & Jingxian Cui & Qianzi Yang & Haibo Ke & Yao Zhang & Baolong Shen & Weihua Wang, 2024. "Dual-phase nano-glass-hydrides overcome the strength-ductility trade-off and magnetocaloric bottlenecks of rare earth based amorphous alloys," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-48531-7
    DOI: 10.1038/s41467-024-48531-7
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    References listed on IDEAS

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    1. Ge Wu & Ka-Cheung Chan & Linli Zhu & Ligang Sun & Jian Lu, 2017. "Dual-phase nanostructuring as a route to high-strength magnesium alloys," Nature, Nature, vol. 545(7652), pages 80-83, May.
    2. Virgil Provenzano & Alexander J. Shapiro & Robert D. Shull, 2004. "Reduction of hysteresis losses in the magnetic refrigerant Gd5Ge2Si2 by the addition of iron," Nature, Nature, vol. 429(6994), pages 853-857, June.
    3. Virgil Provenzano & Alexander J. Shapiro & Robert D. Shull, 2004. "Correction: Corrigendum: Reduction of hysteresis losses in the magnetic refrigerant Gd5Ge2Si2 by the addition of iron," Nature, Nature, vol. 430(7001), pages 810-810, August.
    4. Baran Sarac & Yurii P. Ivanov & Andrey Chuvilin & Thomas Schöberl & Mihai Stoica & Zaoli Zhang & Jürgen Eckert, 2018. "Origin of large plasticity and multiscale effects in iron-based metallic glasses," Nature Communications, Nature, vol. 9(1), pages 1-10, December.
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