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Metallurgical and Materials Transactions A

, Volume 45, Issue 11, pp 4766–4769

First Online: 01 August 2014


With the use of today’s computer softwares, phase diagrams can readily be plotted with a wide choice of variables on the axes. Hillert defined a true phase diagram as a diagram where each point uniquely defines the stable phases. He also showed that not all choices of axis variables give true phase diagrams. In this note we will demonstrate that although the rules stated by Hillert are necessary they are not sufficient to have true phase diagrams.

Manuscript submitted June 25, 2014.

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Author: John Ågren - Rainer Schmid-Fetzer


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