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Modifications of iron and manganese on the melt equilibria of binary systems – a critical assessment
Author(s) -
Schürmann Eberhard
Publication year - 1997
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.199701170
Subject(s) - manganese , thermodynamics , transformation (genetics) , binary number , chemistry , binary system , materials science , metallurgy , mathematics , physics , biochemistry , arithmetic , gene
To determine the influences of modifications of an element on the melt equilibria of binary systems, quite specific requirements have to be met in relation to the configuration of the stable and unstable equilibria lines, and these are indicated at the onset. In relation to modifications of iron, they enable clear conclusions to be drawn as to their influences, and enable critical assessment of the influence of the manganese modifications on the melt equilibria, regarded as dubious, in the systems Fe‐Mn and Mn‐Si, and also in manganese‐rich Mn‐ X systems with X = Pd, Ta, Rh, In, Sb, Ru, Cu. They also enable absent or incorrectly drawn stable and unstable melt and transformation equilibria of the systems Fe‐Mn and Mn‐Si to be effectively supplemented. A critical thermodynamic assessment of the measured manganese vapour pressure curves provides important indications as to the stable and unstable melt and transformation equilibria of the manganese modifications.