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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
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.
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- Copyright © Materials Research Society 1983
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