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On the glass transition temperature and the elastic properties in Zr-based bulk metallic glasses
Authors:A. Caron  R. Wunderlich  D.V. Louzguine  T. Egami  H.-J. Fecht
Affiliation:1. WPI-Advanced Institute of Materials Research, Tohoku University , Sendai 980-8577, Japan;2. Institute of Micro- and Nanomaterials, University of Ulm , 89081 Ulm, Germany arnaud.caron@inm-gmbh.de;4. Institute of Micro- and Nanomaterials, University of Ulm , 89081 Ulm, Germany;5. WPI-Advanced Institute of Materials Research, Tohoku University , Sendai 980-8577, Japan;6. Department of Materials Science and Engineering , Joint Institute for Neutron Sciences, University of Tennessee , Knoxville, TN 37996-1508, USA;7. Department of Physics and Astronomy , University of Tennessee , Knoxville, TN 37996-1508, USA;8. Materials Science and Technology Division, Oak Ridge National Laboratory , Oak Ridge, TN 37831, USA;9. Institute of Micro- and Nanomaterials, University of Ulm , 89081 Ulm, Germany;10. Institute of Nanotechnology, Karlsruhe Institute of Technology , Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
Abstract:The temperature dependence of the elastic moduli was estimated from ultrasound time of flight measurements performed on bulk metallic glasses of composition Zr63? x Cu24Al x Ni10Co3. Using the corresponding values at the glass transition temperature, the local atomic strain was determined. The obtained values for the critical atomic strain calculated for 8 at%?x?
Keywords:bulk metallic glasses  elasticity  local atomic strain  glass transition
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