Dilatometric measurements and glass-forming ability in Pr-based bulk metallic glasses

Dilatometric measurements were conducted to obtain the average thermal expansion coefficients ( α aver) of a series of Pr-based bulk metallic glasses at various experimental conditions. A correlation was found between α aver and the weighted average of the thermal expansion coefficients for the cons...

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Bibliographic Details
Published in:Scripta materialia 2006-09, Vol.55 (6), p.517-520
Main Authors: Meng, Q.G., Zhang, S.G., Li, J.G., Bian, X.F.
Format: Article
Language:English
Subjects:
Amorphous materials
Applied sciences
Constituents
Correlation
Dilatometry
Exact sciences and technology
Glass-forming ability
Mathematical analysis
Metallic glasses
Metals. Metallurgy
Thermal expansion
Thermally activated processes
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Summary:Dilatometric measurements were conducted to obtain the average thermal expansion coefficients ( α aver) of a series of Pr-based bulk metallic glasses at various experimental conditions. A correlation was found between α aver and the weighted average of the thermal expansion coefficients for the constituent elements. By assuming Lennard-Jones type potentials, the average nearest-neighbor distances ( r 1) and the depths of effective pair potentials ( V 0) were calculated. The values of r 1 agreed well with the experimental results and V 0 correlated with the glass-forming ability.
ISSN:1359-6462
0956-716X
1872-8456
DOI:10.1016/j.scriptamat.2006.05.036