Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/10099
Title: Deformation behavior of Zr-based bulk metallic glass and composite in the supercooled liquid region
Authors: Chen, Q
Liu, L
Chan, KC 
Keywords: Bulk metallic glass
Composites
Supercooled liquid region
Compressive deformation
Free volume
Issue Date: 2008
Publisher: Science in China Press
Source: Science in China. Series G. Physics mechanics & astronomy, 2008, v. 51, no. 4, p. 349-355 How to cite?
Journal: Science in China. Series G. Physics mechanics & astronomy 
Abstract: A Zr-based bulk metallic glass (BMG) with a composition of (Zr75Cu25)78.5Ta4Ni10Al7.5 and a bulk metallic glass matrix composite (BMGC) with a composition of (Zr75Cu25)74.5Ta8Ni10Al7.5 have been prepared by copper-mold casting. The compressive deformation behavior of the BMG and BMGC was investigated in the supercooled region at different temperatures and various strain rates ranging from 8×10−4 s−1 to 8×10−2 s−1. It was found that both the strain rate and test temperature significantly affect the deformation behavior of the two alloys. The deformation follows Newtonian flow at low strain rates but non-Newtonian flow at high strain rates. The deformation mechanism for the two kinds of alloys was discussed in terms of the transition state theory.
URI: http://hdl.handle.net/10397/10099
ISSN: 1672-1799
DOI: 10.1007/s11433-008-0047-0
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