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Refractory Mo–Si-Based Glassy Alloy Designed for Ultrahigh Strength and Thermal Stability

Published online by Cambridge University Press:  03 March 2011

X.Q. Zhang ,
W. Wang ,
E. Ma  and
J. Xu
X.Q. Zhang
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China
W. Wang
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China
E. Ma
Affiliation:
Department of Materials Science and Engineering, The Johns Hopkins University, Baltimore, Maryland 21218
J. Xu*
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: [email protected]
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Abstract

Mechanically alloyed Mo44Si26Ta5Zr5Fe3Co12Y5 multicomponent glassy alloy exhibits an exceptionally high glass transition temperature of 1202 K and a crystallization temperature of 1324 K, as well as an ultrahigh hardness of 18 GPa. This example is used to demonstrate metallic glasses that possess extraordinary thermal stability and ultrahigh strength and, at the same time, a wide supercooled liquid region (122 K) that is needed for processing into bulk forms through powder metallurgy routes.

Keywords

AmorphousHardnessMechanical alloying
Type
Articles
Information
Journal of Materials Research , Volume 20 , Issue 11 , November 2005 , pp. 2910 - 2913
Copyright
Copyright © Materials Research Society 2005

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References

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