Abstract
A series of experimental efforts have recently made in an attempt to gain understanding of shear band propagation in metallic glasses. It was found that plastic flow serration observed in compression was actually caused by successive (intermittent) shear along a single shear plane, not random shear band emission. Several experimental techniques, including conventional Instron, attaching linear voltage differential transducer, strain gage, and high-speed camera, were employed to investigate shear band propagation during flow serration. The test results showed that the shear band propagation consisted of the acceleration, deceleration, and the final arrest. The maximum velocity of a propagating shear band was about 4 mm s
-1, which corresponds to a high strain rate of about 10
5 s
-1. The viscosity of a propagating shear band was evaluated to be only about 1 × 10
4-5 × 10
5 Pa s, indicating the shear band was very fluidic. Video images capture from a high-speed camera also revealed that the shear was simultaneous, rather than in a progressive fashion. © 2011 Elsevier Ltd. All rights reserved.
| Original language | English |
|---|---|
| Pages (from-to) | 1968-1977 |
| Journal | Intermetallics |
| Volume | 19 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - Dec 2011 |
| Externally published | Yes |
Bibliographical note
Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].Research Keywords
- B. Glasses, metallic
- B. Mechanical properties at ambient temperature
- B. Plastic deformation mechanisms
- F. Mechanical testing