Abstract
Dynamic mechanical analysis was performed in two metallic glasses that show markedly distinct β relaxation features. The confined flow defects of free-volume zones and the inelastic deformation behavior result into a significant mechanical hysteresis loop in dynamic cyclic loadings, which is described with a viscoelastic model. Annealing below the glass transition temperature Tg decreases the concentration of free-volume zones. The understanding of the inelastic deformation, which is related to free-volume zones, is critical and may provide a new avenue into the mechanical properties’ improvement of high entropy metallic glasses.
Original language | English |
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Article number | 113675 |
Journal | Scripta Materialia |
Volume | 194 |
DOIs | |
Publication status | Published - 2021 Mar 15 |
Keywords
- Flow defects
- Free-volume zones
- High-entropy metallic glass
- Inelastic deformation
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys