It is important to know the formation energy of a ternary alloy system in many fields of materials science and engineering. It requires a significant effort to measure it experimentally. Theoretical calculations of formation energy having the flexibility to deal with complexity are very useful and have scientific meaning. Apparently there are no such theories existing even though in principle one could calculate the energy of any alloy system. In this paper calculations of the formation energies for ternary alloy systems consisting of combinations of structural metals with all constituents being transition and/or simple metals are presented using an extended Miedema model. The calculations for 12 alloy systems show good agreement with experimental data. It is concluded that this is a simple and convenient method for calculating the formation energy for a ternary alloy system. (C) 2002 Elsevier Science B.V. All rights reserved.
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