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Fabrication of ternary Mg–Cu–Gd bulk metallic glass with high glass-forming ability under air atmosphere

Published online by Cambridge University Press:  31 January 2011

H. Men  and
D. H. Kim
H. Men
Affiliation:
Department of Metallurgical Engineering, Center for Non-crystalline Materials, Yonsei University, 134 Shinchon-dong, Seodaemun-ku, Seoul 120-749, South Korea
D. H. Kim*
Affiliation:
Department of Metallurgical Engineering, Center for Non-crystalline Materials, Yonsei University, 134 Shinchon-dong, Seodaemun-ku, Seoul 120-749, South Korea
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

A new Mg65Cu25Gd10 alloy having significantly improved glass-forming ability (GFA) has been developed. In this article, we show that the ternary Mg65Cu25Gd10 bulk metallic glass with diameter of at least 8 mm can successfully be fabricated by a conventional Cu-mold casting method in air atmosphere. The critical cooling rate for glass formation was estimated on the order of magnitude of approximately 1 K/s. When compared with the GFA of Mg65Cu25Y10 alloy, the significantly improved GFA of Mg65Cu25Gd10 alloy cannot be explained by ΔTx and Trg values.

Type
Rapid Communications
Information
Journal of Materials Research , Volume 18 , Issue 7 , July 2003 , pp. 1502 - 1504
Copyright
Copyright © Materials Research Society 2003

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