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Thermodynamic reassessment of the Fe-Cu-Er ternary System

G.J Zhou * and Y. Luo

 Using CALPHAD method, the Fe-Er binary systems were optimized. Ordinary subitutional solution are adopted to model liquid and other terminal solution, and all intermetallic phases are treated as stoichiometric compounds. Calculated phase diagram and thermodynamic data are both consistent with the experimental work. Then, the Fe-Cu-Er system was extrapolated by using the Fe-Er, Fe-Cu and Cu-Er binary systems.