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Effect of high pressure on glass transition in Zr-Ti-Cu-Ni-Be bulk metallic glass

Published online by Cambridge University Press:  11 February 2011

Wei Hua Wang ,
Ping Wen ,
Yan Hui Zhao ,
Ming Xiang Pan  and
De Qian Zhao
Wei Hua Wang
Affiliation:
Institute of Physics, Chinese Academy of Sciences, Beijing 100080, P. R. China
Ping Wen
Affiliation:
Institute of Physics, Chinese Academy of Sciences, Beijing 100080, P. R. China
Yan Hui Zhao
Affiliation:
Institute of Physics, Chinese Academy of Sciences, Beijing 100080, P. R. China
Ming Xiang Pan
Affiliation:
Institute of Physics, Chinese Academy of Sciences, Beijing 100080, P. R. China
De Qian Zhao
Affiliation:
Institute of Physics, Chinese Academy of Sciences, Beijing 100080, P. R. China
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Abstract

A new method is developed to directly exhibit glass transition in Zr-Ti-Cu-Ni-Be bulk glass-forming alloy under high pressure in metallic glass. Via the method, we derive an increase of glass transition temperature, Tg with pressure of 5.6 K/GPa, and a formation volume (ΔVf) of 6.5 Å3 for diffusion and the migration volume (ΔVm) of 6.5 Å3. The glass transition under high pressure is simulated based on the free-volume theory, and the simulations are consistent with the experimental observations.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 754: Symposium CC – Supercooled Liquids, Glass Transition and Bulk Metallic Glasses , 2002 , CC4.3
Copyright
Copyright © Materials Research Society 2003

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References

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