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Monotectic Alloy Solidification - Determination of the Liquidus Surface in the System Succinnonitrile-Ethanol-Glycerol

Published online by Cambridge University Press:  15 February 2011

Richard N. Grugel
Affiliation:
Department of Metallurgical Engineering, Michigan Technological University, Houghton MI 49931
A. Hellawell
Affiliation:
Department of Metallurgical Engineering, Michigan Technological University, Houghton MI 49931
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Abstract

The microstructure of alloys undergoing a monotectic reaction, Liquid I ⇆ Solid I + Liquid II, is related to the height of the liquid miscibility gap, upper consolute temperature, TC, relative to that of the monotectic horizontal at TM. It has been shown in the system Cu-Pb-Al that a transition in microstructure occurs as the temperature interval, Tc-TM, changes with composition. In order to observe the structural change directly in a transparent material, it has been necessary to determine the liquidus surface for the system succinnonitrile(S)-ethanol(E)-glycerol(G). In this system monotectic reactions in the binary S-E and S-G systems are joined by a monovariant valley and a structural transition occurs at approximately 85.6 wt. % S, 7.5 wt. % E, 6.9 wt. % G, at a ratio of 48:52 = G:E.

Type
Research Article
Copyright
Copyright © Materials Research Society 1983

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References

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