| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
Ceramics and Glasses Simulations and Machine Learning
|
| Presentation Title |
The Energy Landscape Governs Brittle-to-Ductile Transitions in Glasses |
| Author(s) |
Longwen Tang, Mathieu Bauchy |
| On-Site Speaker (Planned) |
Mathieu Bauchy |
| Abstract Scope |
Based on their structure, non-crystalline phases can fail in a brittle or ductile fashion. However, the nature of the linkages between structure and propensity for ductility in disordered materials has remained elusive. Here, based on molecular dynamics simulations, we investigate the fracture of a Lennard-Jones system with varying degrees of disorder. We find that that structural disorder results in an increase in ductility. By applying the activation-relaxation technique (an accelerated sampling method to identify transition states), we show that the propensity for ductility is controlled by the topography of the energy landscape. |