Journal
JOURNAL OF MATERIALS SCIENCE
Volume 46, Issue 19, Pages 6203-6212Publisher
SPRINGER
DOI: 10.1007/s10853-011-5612-7
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Funding
- National Natural Science Foundation of China [50871088, 50871081]
- Natural Science Foundation of Shaanxi
- International Cooperation Program of Shaanxi
- Specialized Research Fund for the Doctoral Program of Higher Education
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Some Cu-based alloy systems with a large positive enthalpy of mixing display a eutectic or peritectic phase diagram under equilibrium conditions, but show a metastable liquid miscibility gap in the undercooled state. When the melt is undercooled below certain temperature beyond the critical liquid-phase separation temperature, it separates into two liquids with different compositions. The compositions of the two liquids change successively upon the metastable phase diagram before solidification occurs. The shape and position of the metastable miscibility gap are dependent of the alloy components and their interaction features. This study reviews the metastable phase diagrams of Cu-based alloy systems, which are derived from experiments and thermodynamic calculations.
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