Abstract
Nanoindentation of a Zr-based metallic glass was performed under various loading rates by using a cube-corner indenter. Experimental results showed that increasing the loading rate from 2 to 20 mN/s, the size of serrated flow was greatly weakened, but the number of serrated flow kept very stable, together with very similar shear band features around the residual indents. These results challenge the current understanding derived from the results obtained by using the Berkovich indenter, and can be well explained by the shear-band propagation dynamics model, i.e., loading rate impeded the propagation of shear band rather than its nucleation.
Original language | English |
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Article number | 157587 |
Journal | Journal of Alloys and Compounds |
Volume | 857 |
DOIs | |
Publication status | Published - 2021 Mar 15 |
Keywords
- Bulk metallic glass
- Nanoindentation
- Serrated flow
- Shear band
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry