| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Bulk Metallic Glasses XIX
|
| Presentation Title |
Shear Bands in Metallic Glasses: Local Structure, Atomic Mobility and Relaxation Kinetics |
| Author(s) |
Gerhard H. Wilde |
| On-Site Speaker (Planned) |
Gerhard H. Wilde |
| Abstract Scope |
Exceeding the elastic limit during deformation of metallic glasses causes shear localization and work softening. Microscopically, it is the local atomic structure and its intrinsic heterogeneity that governs atomic mobility as well as the relaxation behavior of glasses. Yet, the structure and properties of the shear bands are often not considered in detail and assumed to be similar to the original glass. We have performed a comprehensive study concerning the local medium range order structures inside and outside shear bands before and after plastic deformation. Additionally, the strain fields adjacent to shear bands and the MRO of shear-affected zones have been determined. For identical deformation states, the self-diffusivity has been determined after the shear has ceased. The results of these complementing analyses are discussed with respect to the description of inhomogeneous plastic flow of metallic glasses. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Other, Other |