Cryogenic-temperature-induced structural transformation of a metallic glass
Publikationen: Beitrag in Fachzeitschrift › Artikel › Forschung › (peer-reviewed)
Autoren
Organisationseinheiten
Externe Organisationseinheiten
- Shanghai University
- University of Hong Kong
- IFW Dresden
- Deutsches Elektronen-Synchrotron DESY
- Erich-Schmid-Institut für Materialwissenschaft der Österreichischen Akademie der Wissenschaften
Abstract
The plasticity of metallic glasses depends largely on the atomic-scale structure. However, the details of the atomic-scale structure, which are responsible for their properties, remain to be clarified. In this study, in-situ high-energy synchrotron X-ray diffraction and strain-rate jump compression tests at different cryogenic temperatures were carried out. We show that the activation volume of flow units linearly depends on temperature in the non-serrated flow regime. A plausible atomic deformation mechanism is proposed, considering that the activated flow units mediating the plastic flow originate from the medium-range order and transit to the short-range order with decreasing temperature.
Details
Originalsprache | Englisch |
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Seiten (von - bis) | 284-291 |
Seitenumfang | 8 |
Fachzeitschrift | Materials Research Letters [Elektronische Ressource] |
Jahrgang | 5.2017 |
Ausgabenummer | 4 |
DOIs | |
Status | Elektronische Veröffentlichung vor Drucklegung. - 30 Nov. 2016 |