| About this Abstract |
| Meeting |
2017 TMS Annual Meeting & Exhibition
|
| Symposium
|
Bulk Metallic Glasses XIV
|
| Presentation Title |
The Multiple Shear Bands and Plasticity in Metallic Glasses: An Origin from Stress Inhomogeneity |
| Author(s) |
Guannan Yang, Yang Shao, Kefu Yao |
| On-Site Speaker (Planned) |
Guannan Yang |
| Abstract Scope |
What is the origin of plasticity and multiple shear bands in the shear-softened metallic glasses? Here we present a finite element method simulation to explore this question under a conventional loading situation of uniaxial compression. The simulation successfully reproduces the multiple shear bands formation, shear-offset size and shear band intersections, and also consists with experiments. It shows that the after the former shear bands formation, the stress field would redistribute and become inhomogeneous, and thereby could trigger the formation of new shear bands. These findings indicate that the multiple shear bands in metallic glasses could originate from stress field redistribution, but not from the conventional mechanism of work-hardening induced plasticity. Such results might improve the understanding to the origin of plasticity in these shear-softened materials, and could reasonably explain that the plasticity of metallic glasses depends on both the material and loading condition. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |