About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Theory and Design of Metallic Glasses
|
| Presentation Title |
Corresponding Local Yield Surface Features to Shear Transformation Zones in 2D Glass Models |
| Author(s) |
Spencer Fajardo, Michael Falk, Sylvain Patinet |
| On-Site Speaker (Planned) |
Spencer Fajardo |
| Abstract Scope |
We investigate the local yield surfaces of nanoscale regions in a two-dimensional Lennard-Jones glass, revealing features typical of Mohr-Coulomb yielding. These features can be explained in terms of a collection of distinct shear transformation zones (STZs), where a single STZ corresponds to a region of positive curvature in the yield surface. We collect statistics regarding the intrinsic yield stress, and the pressure dependence of the yield stress for each STZ, which reveals a signature of the glass’ microstructure. Additionally, we demonstrate that each STZ exhibits a unique plastic deformation at the point of yielding which aligns with features of the yield surface, strengthening the connection between the local atomic structure and yielding behavior in metallic glasses.
This work is supported by the US National Science Foundation under Grant Nos. DMR-2323718/DMR-2323719/DMR-2323720. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Mechanical Properties, Other |