Journal
SCRIPTA MATERIALIA
Volume 214, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2022.114673
Keywords
High-entropy metallic glass; Mechanical relaxation; Creep; Free volume
Categories
Funding
- NSFC [51971178, 12072344]
- Natural Science Basic Research Plan for Distinguished Young Scholars in Shaanxi Province [2021JC-12]
- Natural Science Foundation of Chongqing [cstc2020jcyj-jqX0001]
- Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University [CX2021015]
- Youth Innovation Promotion Association of the Chinese Academy of Sciences
- MCIN/AEI [PID2020-112975GB-I00]
- Generalitat de Catalunya AGAUR grant [2017-SGR-42]
- Research Grants Council, the Hong Kong government, through the General Research Fund (GRF) [CityU11200719, CityU11213118]
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The study found that high-entropy metallic glasses have a relatively homogeneous structure, smaller activation volumes, and sluggish free volume evolution during high-temperature deformation. Spectrum analysis can help delineate the deformation details of high-entropy metallic glasses. This core finding sheds light on the structural heterogeneity and sluggish dynamics, providing an essential piece for understanding the deformation mechanism of high-entropy metallic glasses.
A comparative study of high-entropy metallic glasses and their reference counterparts was conducted via mechanical relaxation behavior and high-temperature deformation. We show that the high-entropy metallic glasses possess a relatively more homogeneous structure, which generates smaller activation volumes and sluggish free volume evolution during high-temperature deformation. A spectrum analysis that allows to delineate the deformation details of high-entropy metallic glasses were constructed. The core finding sheds important light on the structural heterogeneity and sluggish dynamics and provides an essential piece for understanding the deformation mechanism of high-entropy metallic glasses.
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