Glass-forming ability and thermal stability of a new bulk metallic glass in the quaternary Zr-Cu-Ni-Al system

Shen, J., Zou, J., Ye, L., Lu, Z. P., Xing, D. W., Yan, M. and Sun, J. F. (2005) Glass-forming ability and thermal stability of a new bulk metallic glass in the quaternary Zr-Cu-Ni-Al system. Journal of Non-Crystalline Solids, 351 30-32: 2519-2523. doi:10.1016/j.jnoncrysol.2005.07.009


Author Shen, J.
Zou, J.
Ye, L.
Lu, Z. P.
Xing, D. W.
Yan, M.
Sun, J. F.
Title Glass-forming ability and thermal stability of a new bulk metallic glass in the quaternary Zr-Cu-Ni-Al system
Journal name Journal of Non-Crystalline Solids   Check publisher's open access policy
ISSN 0022-3093
1873-4812
Publication date 2005-09-01
Sub-type Article (original research)
DOI 10.1016/j.jnoncrysol.2005.07.009
Volume 351
Issue 30-32
Start page 2519
End page 2523
Total pages 5
Place of publication Amsterdam, The Netherlands
Publisher Elsevier BV
Language eng
Abstract A new quaternary Zr-based bulk metallic glass, Zr51Cu20.7Ni12Al16.3, was developed by using a newly proposed approach. It has shown that the reduced glass transition temperature, defined as the ratio of the glass transition temperature to the melting point temperature, of the new quaternary Zr-based bulk metallic glass is as high as 0.66. The Gibbs free energy difference between the glassy state and the corresponding equilibrium crystals is estimated to be 0.99 kJ/mol. The maximum diameter of the glassy rod-like sample prepared through conventional copper-mold casting is close to 5 mm. The single amorphous phase remains unchanged after holding at 400 degrees C for 60 min. These suggest this new alloy having a reasonable glass-forming ability and a high thermal stability against crystallization, promising a base composition for creating other Zr-based bulk glass formers. (c) 2005 Elsevier B.V. All rights reserved.
Keyword Materials science, ceramics
Materials science, multidisciplinary
Amorphous-alloys
Mechanical-properties
Supercooled liquid
High-strength
Diameter
Sn
Mm
Crystallization
Rod
Gd
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
Centre for Microscopy and Microanalysis Publications
 
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Created: Wed, 17 Oct 2007, 13:57:47 EST