Plasticity in bulk metallic glasses investigated via the strain distribution
- IFW Dresden, Institut fuer Komplexe Materialien, Helmholtzstrasse 20, D-01069 Dresden (Germany)
- Sandvik Materials Technology, SE-81181 Sandviken (Sweden)
- European Synchrotron Radiation Facilities (ESRF), 38042 Grenoble (France)
- LTPCM-CNRS UA29, Domaine Universitaire BP 75, Saint Martin d'Heres 38402 (France)
- Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ (United Kingdom)
We measured the atomic-scale elastic strain in order to investigate the yielding of Zr{sub 55}Cu{sub 20}Ni{sub 10}Al{sub 10}Ti{sub 5} and Cu{sub 47.5}Zr{sub 47.5}Al{sub 5} bulk metallic glasses (BMGs) by x-ray synchrotron radiation at room temperature. High resolution strain scanning reveals a deviation from the linear stress-strain relationship at the onset of macroplastic flow. Similar to polycrystalline metals, a saturation of the elastic strain components has been revealed in the case of the ''plastic'' Cu{sub 47.5}Zr{sub 47.5}Al{sub 5} BMG. The results show that the atomic-level elastic strains of the plastic Cu{sub 47.5}Zr{sub 47.5}Al{sub 5} BMG are more homogeneous compared to the 'brittle' Zr{sub 55}Cu{sub 20}Ni{sub 10}Al{sub 10}Ti{sub 5} glass.
- OSTI ID:
- 21055176
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 9 Vol. 76; ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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