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Fabrication of Cu–Zr–Ag–Al glassy alloy samples with a diameter of 20 mm by water quenching

Published online by Cambridge University Press:  31 January 2011

Wei Zhang ,
Qingsheng Zhang  and
Akihisa Inoue
Wei Zhang
Affiliation:
Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
Qingsheng Zhang*
Affiliation:
Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
Akihisa Inoue
Affiliation:
Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

The melting behavior, thermal stability, and glass-forming ability (GFA) of Cu84−xZrxAg8Al8 (x = 42 to 50) glassy alloys were investigated. The alloy with x = 46 exhibits the highest reduced glass transition temperature (Trg). However, the best GFA was obtained for alloy with x = 48 corresponding to the largest supercooled liquid region (ΔTx) and a deep eutectic composition. At the best GFA composition, full glassy samples with diameters of over 20 mm could be fabricated by injection copper mold casting and water quenching without flux. The underlying mechanism of the unusual GFA of the alloy is discussed.

Keywords

AmorphousCastingStructural
Type
Articles
Information
Journal of Materials Research , Volume 23 , Issue 5 , May 2008 , pp. 1452 - 1456
Copyright
Copyright © Materials Research Society 2008

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