The paper presents the experimental results of the acoustic emission in measuring the aluminum melt temperature. Fourier analysis is used to detect the amplitude-frequency spectrum of the acoustic emission signals within the temperature range of 665−860° С. Periodic signal repetition with the maximum intensity is identified within this temperature range. It is supposed that the acoustic spectrum is associated with the structural transformations in the melt and determines the local order transformation in liquid aluminum. At a temperature rise, the dynamics of the acoustic signals shows that the local order in the melt inherits the structure of the crystalline predecessor. The analysis is given to the cluster formation during the melt cooling. The melt structure is thus considered as a partially ordered clustered medium.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 3, pp. 173–178, March, 2022.
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Vorontsov, V.B., Pershin, V.K. Acoustic Emission of Structural Heterogeneity of Aluminum Melt. Russ Phys J 65, 580–585 (2022). https://doi.org/10.1007/s11182-022-02671-9
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DOI: https://doi.org/10.1007/s11182-022-02671-9