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Nano-amorphous—crystalline dual-phase design of Al80Li5Mg5Zn5Cu5 multicomponent alloy

Al80Li5Mg5Zn5Cu5多组元合金的纳米非晶-晶态双相设计

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Abstract

The design of metallic materials with high strength, high ductility, and high thermal stability has always been a long-sought goal for the materials science community. However, the trade-off between strength and ductility remains a challenge. Here, we proposed a new strategy to design and fabricate bulk amorphous—crystalline dual-phase superior alloys out of the Al80Li5Mg5Zn5Cu5 multicomponent alloy. The nano-amorphous phase revealed unexpected thermal stability during fabrication and mechanical testing above the crystallization temperature. The true fracture strength of the Al80Li5Mg5Zn5Cu5 nano-amorphous-crystal dual-phase multicomponent alloy was increased from 528 to 657 MPa, and the true strain was increased from 18% to 48%. In addition, the alloy yielded a strength 1.5 times higher than that of the commonly used high-strength aluminum alloys at 250°C. This strategy provided a new approach and concept for the design of high-performance alloys to ensure strength—plasticity balance.

摘要

设计具有高强度、 高延展性和高热稳定性的金属材料, 一直是材料科学界追求的目标. 强度和延展性之间的平衡始终面临挑战. 本文中, 我们以Al80Li5Mg5Zn5Cu5多组元合金为模型, 提出了一种设计并制造大块非晶-结晶双相优质合金的新策略. 得到的Al80Li5Mg5Zn5Cu5纳米非晶双相合金的真实断裂强度从528 MPa提高到657 MPa, 真实应变从18%提高到48%. 纳米非晶相在热制造和高于结晶温度的力学性能测试中展现出优异的热稳定性, 使得该合金在250°C时的屈服强度, 比常用的高强度铝合金高出1.5倍. 这一策略为高性能合金的设计、 制造提供了一种新的方法和概念.

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Acknowledgements

This work was supported by the Key Basic and Applied Research Program of Guangdong Province, China (2019B030302010), the National Natural Science Foundation of China (52122105 and 51871157), the National Key Research and Development Program of China (2018YFA0703604). Thanks to Dr. Tong Xing from Guangdong Songshan Lake Materials Laboratory for his contribution to the TEM in-situ heating experiments.

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Authors and Affiliations

  1. Shenzhen Key Laboratory of High Performance Nontraditional Manufacturing, College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen, 518060, China

    Hongzhen Li  (李泓臻), Jianan Fu  (傅佳男) & Jiang Ma  (马将)

  2. National Engineering Research Center of Near-net-shape Forming for Metallic Materials, South China University of Technology, Guangzhou, 510640, China

    Chao Yang  (杨超) & Weisi Cai  (蔡潍锶)

  3. Songshan Lake Materials Laboratory, Dongguan, 523808, China

    Yuqiang Yan  (闫玉强)

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  1. Hongzhen Li  (李泓臻)
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  2. Chao Yang  (杨超)
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  3. Jianan Fu  (傅佳男)
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  4. Weisi Cai  (蔡潍锶)
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  6. Jiang Ma  (马将)
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Contributions

Author contributions Li H and Ma J conceived the experiments. Li H, Fu J, Cai W, and Yan Y performed the experiments. Yang C analyzed the data. Li H and Ma J wrote the manuscript with contributions from other authors.

Corresponding author

Correspondence to Jiang Ma  (马将).

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Conflict of interest The authors declare no conflict of interest.

Additional information

Supplementary information Experimental details and supporting data are available in the online version of the paper.

Hongzhen Li received his master degree in mechanical engineering from Shenzhen University (SZU) in 2020. Currently, he is studying for a PhD at South China University of Technology. His research includes metallic glass, high-entropy alloys and advanced manufacturing.

Jiang Ma received his BSc degree in materials science and engineering from Southeast University in 2009 and PhD degree from the Institute of Physics, Chinese Academy of Sciences (CAS), in 2014. He is currently a Professor at the College of Mechatronics and Control Engineering, SZU. His research includes metallic glass, high-entropy alloy, micro/nano precision forming, and functional surface fabrication and application.

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Li, H., Yang, C., Fu, J. et al. Nano-amorphous—crystalline dual-phase design of Al80Li5Mg5Zn5Cu5 multicomponent alloy. Sci. China Mater. 65, 1671–1678 (2022). https://doi.org/10.1007/s40843-021-1934-x

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