Abstract
At cryogenic temperatures bulk metallic glasses can sustain higher plastic strains than at room temperature. This is generally believed to result from an intrinsic shear-band nucleation rate that increases with decreasing temperature. Here we report on inhomogeneous flow operating via a single shear band even at cryogenic temperatures, challenging the presupposition of increased shear-band activity. The results provide a new interpretation of non-serrated flow and explain, via a simple viscosity law, the correspondingly observed strength increase with decreasing temperature.
Original language | English (US) |
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Pages (from-to) | 231-234 |
Number of pages | 4 |
Journal | Scripta Materialia |
Volume | 66 |
Issue number | 5 |
DOIs | |
State | Published - Mar 2012 |
Externally published | Yes |
Keywords
- Low temperature
- Metallic glass
- Plasticity
- Shear band
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys