Atomic Dynamics in Metallic Liquids and Glasses
| Autor: | Rachel S Aga, Takeshi Egami, James R. Morris, V. A. Levashov |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Amorphous metal
Materials science Mechanical Engineering Condensed Matter Physics Condensed Matter::Disordered Systems and Neural Networks Metal Mechanics of Materials Chemical physics visual_art visual_art.visual_art_medium Relaxation (physics) General Materials Science Physics::Atomic Physics Glass transition Topology (chemistry) |
| Zdroj: | MATERIALS TRANSACTIONS. 48:1729-1733 |
| ISSN: | 1347-5320 1345-9678 |
| DOI: | 10.2320/matertrans.mj200763 |
| Popis: | How atoms move in metallic glasses and liquids is an important question in discussing atomic transport, glass formation, structural relaxation and other properties of metallic glasses. While the concept of free-volume has long been used in describing atomic transport, computer simulations and isotope measurements have shown that atomic transport occurs by a much more collective process than assumed in the free-volume theory. We introduce a new approach to describe the atomic dynamics in metallic glasses, in terms of local energy landscapes related to fluctuations in the topology of atomic connectivity. This approach may form the basis for a new paradigm for discussing the structure-properties relationship in metallic glasses. |
| Databáze: | OpenAIRE |
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