| About this Abstract |
| Meeting |
2011 TMS Annual Meeting & Exhibition
|
| Symposium
|
Bulk Metallic Glasses VIII
|
| Presentation Title |
Shear Band Patterns in Metallic Glasses under Vickers Indentation |
| Author(s) |
Zhinan An, Yanfei Gao, Fengxiao Liu, Peter K Liaw |
| On-Site Speaker (Planned) |
Zhinan An |
| Abstract Scope |
Vickers indentation was conducted on Zr-based bulk metallic glasses and metallic glass thin films. Both semi-sphere shear bands and radial shear bands were discovered in free-bond metallic glasses, yet only radial shear bands could be seen in non-free-bond metallic glasses. The radial shear bands were generated due to in-plane shear stresses and were in agreement with the maximum shear stress direction according to our finite element analysis. While the semi-sphere shear bands were caused by out-of-plane shear stresses. Shear bands were blocked by the film/substrate. Instead of penetrating into the substrate, the radial shear bands were reflected back into the metallic glass thin film. This phenomenon was both discovered experimentally and predicted in our modeling. |
| Proceedings Inclusion? |
Undecided |