期刊
MATERIALS TODAY PHYSICS
卷 27, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.mtphys.2022.100782
关键词
Metallic glass; Rejuvenation; Stability; Energy storage
资金
- Guangdong Major Project of Basic and Applied Basic Research, China [2019B030302010]
- Guangdong Basic and Applied Basic Research Foundation China [2021A1515111107, 2022A1515011439]
- National Natural Science Foundation of China [52071081, 52071222, 11790291, 51971239, 61888102]
- National Key Research and Development Plan [2018YFA0703603]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB30000000]
Mechanical milling can continuously rejuvenate metallic glass powders, resulting in a highly rejuvenated state with stable nanoglass-like structure and unique properties.
Rejuvenation, represented by energy recovery, can markedly improve properties such as plastic deformability and catalytic activity of glassy materials. However, owing to the metastability and rapid atomic mobility, rejuvenated glasses tend to relax and a highly rejuvenated state can hardly be achieved, much less persist steadily against various external perturbations. Here, we show that mechanical milling (MM) is a simple and efficient method for continuously rejuvenating the metallic glass (MG) powders to such a high-energy state that is equivalent to a glassy state attained by quenching at a cooling rate of 10(9)similar to 10(10) K s(-1). Surprisingly, such a highly rejuvenated MG state can steadily maintain against long-time extended milling and dozens of days aging. The achieved stable and extreme rejuvenation state is attributed to the unique nanoglass-like structure generated by repeated fragmentation and adhesion between powder particles. This work would be helpful for understanding the metastable characteristics of MGs and exploring stable and high-energy glassy materials with unique and tunable properties.
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