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arXiv · 2212.08133

Competition of glass and crystal: phase-field model

M. G. Vasin·V. Ankudinov
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Abstract

The phase-field model for the description of the solidification processes with the glass-crystal competition is suggested. The model combines the first-order phase transition model in the phase-field formalism and gauge-field theory of glass transition. We present a self-consistent system of stochastic motion equations for unconserved order parameters describing the crystal-like short-range ordering and vitrification. It is shown, that the model qualitatively describes the glass-crystal competition during quenching with finite cooling speed. The nucleation of the crystalline phase at slow cooling speeds and low undercoolings proceeds by a fluctuation mechanism. The model demonstrates the tendency to amorphization with the increase of its cooling rate.

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M. G. Vasin, V. Ankudinov. 2022-12-15. Competition of glass and crystal: phase-field model. https://doi.org/10.1002/mma.9207

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