| About this Abstract |
| Meeting |
2017 TMS Annual Meeting & Exhibition
|
| Symposium
|
Bulk Metallic Glasses XIV
|
| Presentation Title |
Improving the Fracture Toughness of Bulk Metallic Glasses by Thermomechanical Treatments |
| Author(s) |
Jamie J. Kruzic, Bosong Li, Shenghui Xie, Hamed Shakur Shahabi, Sergio Scudino, Jürgen Eckert |
| On-Site Speaker (Planned) |
Jamie J. Kruzic |
| Abstract Scope |
While notched toughness values for bulk metallic glasses (BMGs) tend to be consistently high, large variability has been reported in pre-cracked mode I fracture toughness and such scatter is seen even for a single BMG composition. In this presentation it will be discussed how the observed fracture behavior is related to the internal structure of the BMG samples, and how high toughness behavior can be induced by creating favorable metallic glass structures. The effects of thermomechanical treatments such as cold imprinting, cold rolling, and cryogenic thermal cycling on fracture toughness will be presented. In general, such treatments are shown to 1) ductilize pre-cracked bending beams, 2) reduce the observed scatter in the fracture toughness, and 3) achieve high toughness behavior typical of notched samples. Overall, these results suggest that thermomechanical treatments are an easily accessible means to induce favorable glass structures that promote improved fracture toughness behavior. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |