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Influence of casting temperature on the thermal stability of Cu- and Zr-based metallic glasses: Theoretical analysis and experiments

Published online by Cambridge University Press:  31 January 2011

Z.W. Zhu ,
H.F. Zhang ,
H. Wang ,
B.Z. Ding  and
Z.Q. Hu
Z.W. Zhu
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China; and Faculty of Engineering and Surveying, The University of Southern Queensland, Toowoomba, Queensland 4350, Australia
H.F. Zhang*
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China
H. Wang
Affiliation:
Faculty of Engineering and Surveying, The University of Southern Queensland, Toowoomba, Queensland 4350, Australia
B.Z. Ding
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China
Z.Q. Hu
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China
*
a)Address all correspondence to this author. e-mail: hfzhang@imr.ac.cn
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Abstract

Influence of casting temperature on the thermal stability of Cu- and Zr-based metallic glasses (MGs) was analyzed based on the monomer-cluster structural model using the Johnson–Mehl–Avrami (JMA) equation. The result indicates that increasing the casting temperature can enhance the thermal stability of MGs. It is suggested that it be attributed to the decrease in the amount of the local ordering clusters induced by the elevating casting temperature. The prediction is confirmed by continuous heating transformation diagrams constructed for the Cu- and Zr-amorphous samples obtained under different casting temperatures.

Keywords

AmorphousMetalRapid solidification
Type
Articles
Information
Journal of Materials Research , Volume 23 , Issue 10 , October 2008 , pp. 2714 - 2719
Copyright
Copyright © Materials Research Society 2008

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