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Atomic Structure of Cu49Hf42Al9 Metallic Glass with High Glass-Forming Ability and Plasticity

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Acta Metallurgica Sinica (English Letters) Aims and scope

Abstract

Electron diffraction was used to study the local atomic structure of Cu49Hf42Al9 metallic glasses (MGs). The amorphous nature of the MG was fully retained after the compression test. The partial radial distribution functions (PRDFs) of the MG structure obtained from the atomic model using reverse Monte Carlo and density functional theory optimization display that the peaks of the first nearest-neighbour distances for Cu–Cu, Hf–Cu and Hf–Hf atomic pairs were located at 2.56 Å, 2.78 Å and 3.23 Å, respectively. The wide distribution of PRDF for Hf–Hf atomic pair explained the high plasticity of the material.

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Acknowledgements

This work was supported by the National Science Fund for Excellent Young Scholars of China (No. 51422203), the National Natural Science Foundation of China (Nos. 51572091 and 51372001), the Natural Science Foundation of Guangdong Province, China (No. 2018A030313395), the China Postdoctoral Science Foundation (No. 2017M610522), the Science and Technology Program of Guangzhou, China (No. 201604046027), the Fundamental Research Funds for the Central Universities (No. 2017BQ035) and the fund of the State Key Laboratory of Solidification Processing in NWPU (No. SKLSP201716).

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Authors and Affiliations

  1. State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, China

    Kai Li, Fang-Liang Gao & Guo-Qiang Li

  2. Engineering Research Center on Solid-State Lighting and Its Informationisation of Guangdong Province, South China University of Technology, Guangzhou, 510640, China

    Kai Li, Fang-Liang Gao & Guo-Qiang Li

  3. Department of Electronic Materials, School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, China

    Kai Li, Fang-Liang Gao & Guo-Qiang Li

  4. Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, UK

    Yu-Jen Chou

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  1. Kai Li
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Correspondence to Fang-Liang Gao or Guo-Qiang Li.

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Li, K., Chou, YJ., Gao, FL. et al. Atomic Structure of Cu49Hf42Al9 Metallic Glass with High Glass-Forming Ability and Plasticity. Acta Metall. Sin. (Engl. Lett.) 32, 803–807 (2019). https://doi.org/10.1007/s40195-019-00907-1

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  • DOI: https://doi.org/10.1007/s40195-019-00907-1

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