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The effect of various transition metals on glass formation in ternary La-TM-Al (TM = Co, Ni, Cu) alloys

Published online by Cambridge University Press:  01 April 2011

H. Yang ,
X. Li  and
Y. Li
H. Yang
Affiliation:
Department of Materials Science and Engineering, Faculty of Engineering, National University of Singapore, Singapore 117576, Singapore
X. Li
Affiliation:
Department of Materials Science and Engineering, Faculty of Engineering, National University of Singapore, Singapore 117576, Singapore
Y. Li*
Affiliation:
Department of Materials Science and Engineering, Faculty of Engineering, National University of Singapore, Singapore 117576, Singapore
*
a)Address all correspondence to this author. e-mail: mseliy@nus.edu.sg
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Abstract

The optimum glass formers in ternary La-TM-Al (TM = Co, Ni, Cu) alloys were pinpointed at alloys La69Co17Al14, La66Ni19Al15, and La66Cu20Al14, exhibiting critical sizes for full glass formation of 16, 12, and 5 mm, respectively. Cobalt is found to be the most favorable element for glass formation in La-based alloys. The optimum alloys in La-TM-Al show close composition but significantly different glass-forming ability (GFA). The mechanism of distinct effect of TM elements remains unclear, even discussed based on current GFA-related criteria and indicators.

Keywords

AmorphousLaCasting

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Type
Articles
Information
Journal of Materials Research , Volume 26 , Issue 8 , 28 April 2011 , pp. 992 - 996
Copyright
Copyright © Materials Research Society 2011

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