About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Theory and Design of Metallic Glasses
|
| Presentation Title |
Influence of Structural Heterogeneities and Aspect Ratio on the Plastic Deformation of Nanoglass Nanowires |
| Author(s) |
Daniel Sopu |
| On-Site Speaker (Planned) |
Daniel Sopu |
| Abstract Scope |
To prevent the formation of critical shear bands structural heterogeneities are generated within the glassy structure. Systematically designed metallic glass heterostructures can be created by cold compacting amorphous nanoparticles to form nanoglasses. In this study, molecular dynamics simulations are presented that reveal how nanoglass nanowires deform under tensile loading. These results are then compared with those obtained for homogeneous nanowires. These findings show that nanoglass nanowires exhibit 2% greater ductility than homogeneous nanowires due to the presence of soft interfaces. Additionally, a critical aspect ratio marks the transition from delayed to immediate neck fracture. For small aspect ratios (L/D<10), delayed neck instability and an extended plastic strain are observed. In contrast, nanoglass nanowires with high aspect ratios (L/D>16) exhibit accelerated necking and brittle-like deformation. Von Mises stress and internal energy calculations demonstrate that local structure, internal stress states and residual stresses are responsible for the enhanced mechanical properties of nanoglasses. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Mechanical Properties, |