Abstract
Studying the flow behavior is critical to understand the deformation mechanism of amorphous solids. However, detecting the basic flow events in amorphous solids is challenging. Here, by simultaneous SAXS/WAXS, elementary flow carriers in wound metallic glasses are identified from flow-induced structural heterogeneities with a radius of gyration of 2.5∼3.5 nm. Their size increases and morphology changes from sphere-like to rod-like under flow. Moreover, the atomic structure exhibits an unusual change to a more disordered state during winding/annealing at the temperature of ∼0.8 Tg. This work provides an atomic-to-nanoscale description of the flow carriers of amorphous solids during deformation. Impact Statement The elementary flow carriers in metallic glasses have a radius of gyration of 2.5∼3.5 nm. During flow, their size increases and morphology changes from sphere-like to rod-like. © 2023 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
Original language | English |
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Pages (from-to) | 547-555 |
Journal | Materials Research Letters |
Volume | 11 |
Issue number | 7 |
Online published | 11 Mar 2023 |
DOIs | |
Publication status | Published - 2023 |
Research Keywords
- flow units
- Metallic glasses
- SAXS/WAXS scattering
Publisher's Copyright Statement
- This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/