Two-way tuning of structural order in metallic glasses

Hongbo Lou, Zhidan Zeng, Fei Zhang, Songyi Chen, Peng Luo, Xiehang Chen, Yang Ren, Vitali B. Prakapenka, Clemens Prescher, Xiaobing Zuo, Tao Li, Jianguo Wen, Wei-Hua Wang, Hongwei Sheng and Qiaoshi Zeng ()
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Hongbo Lou: Center for High Pressure Science and Technology Advanced Research, Pudong
Zhidan Zeng: Center for High Pressure Science and Technology Advanced Research, Pudong
Fei Zhang: Center for High Pressure Science and Technology Advanced Research, Pudong
Songyi Chen: Center for High Pressure Science and Technology Advanced Research, Pudong
Peng Luo: Chinese Academy of Sciences
Xiehang Chen: Center for High Pressure Science and Technology Advanced Research, Pudong
Yang Ren: Argonne National Laboratory
Vitali B. Prakapenka: University of Chicago
Clemens Prescher: University of Chicago
Xiaobing Zuo: Argonne National Laboratory
Tao Li: Argonne National Laboratory
Jianguo Wen: Argonne National Laboratory
Wei-Hua Wang: Chinese Academy of Sciences
Hongwei Sheng: Center for High Pressure Science and Technology Advanced Research, Pudong
Qiaoshi Zeng: Center for High Pressure Science and Technology Advanced Research, Pudong

Nature Communications, 2020, vol. 11, issue 1, 1-9

Abstract: Abstract Metallic glasses are expected to have quite tunable structures in their configuration space, without the strict constraints of a well-defined crystalline symmetry and large energy barriers separating different states in crystals. However, effectively modulating the structure of metallic glasses is rather difficult. Here, using complementary in situ synchrotron x-ray techniques, we reveal thermal-driven structural ordering in a Ce65Al10Co25 metallic glass, and a reverse disordering process via a pressure-induced rejuvenation between two states with distinct structural order characteristics. Studies on other metallic glass samples with different compositions also show similar phenomena. Our findings demonstrate the feasibility of two-way structural tuning states in terms of their dramatic ordering and disordering far beyond the nearest-neighbor shells with the combination of temperature and pressure, extending accessible states of metallic glasses to unexplored configuration spaces.

Date: 2020
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DOI: 10.1038/s41467-019-14129-7

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