Abstract
Structure of quaternary InBiGaSn equiatomic molten alloy has been studied using the X-ray diffraction method at different temperatures within range from 375 up to 773 K. Structure factors and pair correlation functions are analyzed and used to determine the main structure parameters. The structure of the quaternary melt is compared with one both for liquid constituent elements and partial binary melts. The results are interpreted with accounting for the thermodynamic data. It is shown that In-Bi interaction is the dominant factor, which promotes the formation of a structure with close to random atomic distribution.

Key words
low melting temperature alloys, cluster structure, high entropy alloys

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