Microscopic description of flow defects and relaxation in metallic glasses
The anelastic relaxation behavior of amorphous Al86.8Ni3.7Y9.5 was characterized in prolonged, quasistatic measurements, up to 1.1×10(8) s. The size-density distribution of potential shear transformation zones was determined from the data. We derive an expression for the distribution, based on a fre...
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| Veröffentlicht in: | Physical review. E, Statistical, nonlinear, and soft matter physics Statistical, nonlinear, and soft matter physics, 2014-10, Vol.90 (4), p.042313-042313, Article 042313 |
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| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | The anelastic relaxation behavior of amorphous Al86.8Ni3.7Y9.5 was characterized in prolonged, quasistatic measurements, up to 1.1×10(8) s. The size-density distribution of potential shear transformation zones was determined from the data. We derive an expression for the distribution, based on a free-volume criterion for an atomic cluster being a potential shear transformation zone. The model is shown to be consistent with experiment. |
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| ISSN: | 1539-3755 1550-2376 |
| DOI: | 10.1103/PhysRevE.90.042313 |