Abstract
The mechanical behavior and the kinetics of shear banding in bulk metallic glasses was investigated at room and liquid nitrogen temperature using the acoustic emission (AE) technique. It was demonstrated that the intensive AE reflecting the activity of strongly localized shear bands at room temperature vanishes at the transition of plastic flow from serrated to non-serrated with a reduction in temperature. The disappearance of AE clearly suggests that the shear band propagation velocity significantly decreases at low temperature, and sliding along the principle shear band is observed at the machine-driven rate.
Original language | English |
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Pages (from-to) | 6736-6743 |
Number of pages | 8 |
Journal | Acta Materialia |
Volume | 58 |
Issue number | 20 |
DOIs | |
Publication status | Published - 2010 Dec |
Keywords
- Acoustic emission
- Metallic glasses
- Serrated plastic flow
- Shear bands
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Polymers and Plastics
- Metals and Alloys