Thermodynamic analysis of stable and metastable equilibria in the Cu-Cr system

The available experimental information is not sufficient to determine the temperature dependence of excess Gibbs energy of the liquid Cu-Cr alloys. The previously optimized excess entropy of mixing of the liquid phase is too positive. A new set of optimized thermodynamic functions of the Cu-Cr syste...

Full description

Saved in:
Bibliographic Details
Published in:Calphad 1995-03, Vol.19 (1), p.93-104
Main Authors: Zeng, Kejun, Hämäläinen, Marko
Format: Article
Language:English
Subjects:
Chemical thermodynamics
Chemistry
Exact sciences and technology
General and physical chemistry
Metals and alloys
Thermodynamic properties
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The available experimental information is not sufficient to determine the temperature dependence of excess Gibbs energy of the liquid Cu-Cr alloys. The previously optimized excess entropy of mixing of the liquid phase is too positive. A new set of optimized thermodynamic functions of the Cu-Cr system has been obtained from thermodynamic and phase diagram data incorporating the latest data. The Tanaka-Gokcen-Morita relationship was used to constraint the excess enthalpy and entropy coefficients of the liquid phase. The optimized thermodynamic functions can account very well for the process of precipitation in the supersaturated fcc Cu-Cr alloys.
ISSN:0364-5916
1873-2984
DOI:10.1016/0364-5916(95)00010-C