Issue |
Natl Sci Open
Volume 3, Number 5, 2024
|
|
---|---|---|
Article Number | 20230064 | |
Number of page(s) | 12 | |
Section | Physics | |
DOI | https://doi.org/10.1360/nso/20230064 | |
Published online | 18 January 2024 |
RESEARCH ARTICLE
Impact of shadow glass transition on crystallization in metallic glass
1
Wuhan National High Magnetic Field Center, School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
2
Department of Chemistry and iMAT Centre for Integrated Materials Research, Aarhus University, Aarhus 8000, Denmark
3
Department of Chemistry and Bioscience, Aalborg University, Aalborg 9220, Denmark.
* Corresponding author (email: haibinyu@hust.edu.cn)
Received:
19
October
2023
Revised:
8
January
2024
Accepted:
9
January
2024
The stability of glass against crystallization is of importance in practical applications and theoretical understanding of the nature of glass materials. Annealing has complicated influences on glass stability. It induces either delayed or early crystallization, depending on detailed protocols and specific materials. By interrogating the thermal behaviors of twelve metallic glasses (MGs), we find that enhanced stability is correlated to another process: the so-called shadow glass transition and its evolution. Delayed crystallization can be observed when the shadow glass transition is shifted to cross the temperature of crystallization. Concurrently, the shadow glass transition evolves to an enthalpy overshoot. Molecular dynamics simulations support these findings and suggest that the suppressed string-like motion, relating to the shadow glass transition and the enthalpy overshoot, is likely the origin of the postponed nucleation ordering and enhanced glass stability.
Key words: metallic glass / shadow glass transition / crystallization / glass stability / fast scanning calorimetry
© The Author(s) 2024. Published by Science Press and EDP Sciences.
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