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arXiv · 1511.06908

Theoretical description of slow non-monotonic relaxation processes in Al-Y melts

M. G. Vasin·S. G. Menshikova·M. D. Ivshin
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Abstract

The slow non-monotonic relaxation processes, which have been recently fixed in Al-Y melts, are described theoretically. The theoretical description is based on the Cahn-Hilliard theory and functional methods of non-equilibrium dynamics. In terms of the suggested approach the reasons of this relaxation kinetics are non-linearity of the system near to the liquidus line, which sharply increases with Y concentration, and strong initial heterogeneity of the melt on the concentration of Y atoms. According to our analysis one can conclude that the non-monotonic temporal dependence of viscosity is caused by the Ostwald ripening processes in the rich in yttrium areas.

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M. G. Vasin, S. G. Menshikova, M. D. Ivshin. 2015-11-21. Theoretical description of slow non-monotonic relaxation processes in Al-Y melts. https://doi.org/10.1016/j.physa.2015.12.085

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