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Bulk Scandium-based Metallic Glasses

Published online by Cambridge University Press:  03 March 2011

X.K. Xi ,
S. Li ,
R.J. Wang ,
D.Q. Zhao ,
M.X. Pan  and
W.H. Wang
X.K. Xi
Affiliation:
Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
S. Li
Affiliation:
Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
R.J. Wang
Affiliation:
Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
D.Q. Zhao
Affiliation:
Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
M.X. Pan
Affiliation:
Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
W.H. Wang*
Affiliation:
Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
*
a) Address all correspondence to this author. e-mail: whw@aphy.iphy.ac.cn
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Abstract

The novel rare-earth scandium-based bulk metallic glasses (BMGs) are obtained by the copper mold casting method. Compared with other rare-earth BMGs reported so far, the Sc-based BMGs exhibit the highest elastic moduli (e.g., Young’s modulus, E = 85 GPa; bulk modulus, B = 77.5 GPa), glass transition temperature (Tg = 662 K), and crystallization temperature (Tx = 760 K) combined with a large region of supercooled liquid (ΔT = 98 K). A good correlation between glass transition temperature and elastic moduli is found in a variety of rare-earth-based BMGs.

Keywords

CastingElastic propertiesMetallic glass
Type
Rapid Communications
Information
Journal of Materials Research , Volume 20 , Issue 9 , September 2005 , pp. 2243 - 2247
Copyright
Copyright © Materials Research Society 2005

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