Journal
NATIONAL SCIENCE REVIEW
Volume 1, Issue 3, Pages 429-461Publisher
OXFORD UNIV PRESS
DOI: 10.1093/nsr/nwu018
Keywords
metallic glass; beta-relaxation; glass transition; shear transformation zone; shear band; diffusion; stability; ultrastable glass
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Funding
- Alexander von Humboldt Foundation (AvH)
- National Natural Science Foundation of China [51271195]
- German Science Foundation (DFG)
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Focusing on metallic glasses as model systems, we review the features and mechanisms of the beta-relaxations, which are intrinsic and universal to supercooled liquids and glasses, and demonstrate their importance in understanding many crucial unresolved issues in glassy physics and materials science, including glass transition phenomena, mechanical properties, shear-banding dynamics and deformation mechanisms, diffusion and the breakdown of the Stokes-Einstein relation as well as crystallization and stability of glasses. We illustrate that it is an attractive prospect to incorporate these insights into the design of new glassy materials with extraordinary properties. We also outline important questions regarding the nature of beta-relaxations and highlight some emerging research directions in this still-evolving field.
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