About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Theory and Design of Metallic Glasses
|
| Presentation Title |
Amorphous Shear Bands as Carriers of Plasticity and Toughening in Crystalline Materials |
| Author(s) |
Izabela A. Szlufarska, Nuohao Liu, Xuanxin Hu |
| On-Site Speaker (Planned) |
Izabela A. Szlufarska |
| Abstract Scope |
Amorphous shear bands often form in crystalline materials subjected to severe plastic deformation or high strain rates and are typically viewed as precursors to fracture. However, we demonstrate that these bands can instead enable plasticity, even in the absence of dislocations. We establish criteria that predict when amorphous shear bands promote plastic flow versus fracture and validate these criteria in intermetallic compounds. Remarkably, the amorphous regions can recrystallize at low temperatures, enabling full recovery of mechanical properties and suggesting a new avenue for self-healing materials. By examining shear bands across a wide range of strain rates, we uncover the mechanisms governing their rate-dependent behavior and their broader role in crystal plasticity. These results provide new pathways for improving the toughness of nominally brittle materials. |
| Proceedings Inclusion? |
Planned: |