| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Glasses and Optical Materials: Current Issues and Functional Applications
|
| Presentation Title |
The Ductility of Silicate Glasses is Driven by Topological Heterogeneity |
| Author(s) |
Mathieu Bauchy |
| On-Site Speaker (Planned) |
Mathieu Bauchy |
| Abstract Scope |
Disordered materials can exhibit varying degrees of nanoscale ductility depending on their atomic structure. However, the physical mechanism through which structure governs ductility remains unclear. Here, based on molecular dynamics simulations, we investigate the fracture of oxide glasses featuring varying network connectivity. We report the existence of a brittle-to-ductile transition, which is associated with some heterogeneity in the atom dynamics during fracture. We demonstrate that nanoscale ductility during fracture is encoded in the topology of the atomic network and the heterogeneity thereof. |