Abstract
AbstractThe direct correlation between the atomic structure of liquid alloys and their thermodynamic properties makes it possible in principle to obtain information about the structure changes that occur as a result of alloy formation. It is first shown that in addition to the change of the bond properties atomic volume differences of the alloy partners have a definite influence on the energetics of alloy formation. Furthermore a model is developed which successfully explains the deviations from regular behavior of some alloy systems with tendencies toward compound formation by postulating the existence of regions with special coordination relationships in the melt which are in a dynamic equilibrium with statistically disordered regions. Finally, it is suggested that the tendencies of some alloys to form metastable glass like phases are related to the tendencies of these alloys toward the prevailing formation of bonds between atoms of the different species.
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