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Pressure Dependence of Elastic Constants and Debye Temperature for Zr50.5Ti4.8Cu19.0Ni11.4Al14.3 Bulk Metallic Glass

Published online by Cambridge University Press:  31 January 2011

Ping Wen ,
Ru Ju Wang  and
Wei Hua Wang
Ping Wen
Affiliation:
Institute of Physics & Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, People's Republic of China
Ru Ju Wang
Affiliation:
Institute of Physics & Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, People's Republic of China
Wei Hua Wang*
Affiliation:
Institute of Physics & Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, People's Republic of China and National Microgravity Laboratory of Chinese Academy of Sciences, Beijing 100080, People's Republic of China
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

The microstructure of Zr50.5Ti4.8Cu19.0Ni11.4Al14.3 bulk metallic glass (BMG) was investigated by high-resolution electron microscopy. The microstructure of the BMG is of homogeneous composition and short-range ordered microstructure. Using an ultrasonic technique with the pulse echo overlap method, the pressure-dependent acoustic velocities of the BMG have been measured up to 0.5 GPa. The elastic constants and their pressure dependence have been obtained. The isothermal equation of state (EOS) of the BMG is determined in terms of the Murnaghan form. With the results of the elastic constants and the EOS for those of its metallic components, the atomic configuration of the BMG is discussed.

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Articles
Information
Journal of Materials Research , Volume 17 , Issue 7 , July 2002 , pp. 1785 - 1788
Copyright
Copyright © Materials Research Society 2002

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