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Melting Mechanism during Fast Heating

  • MECHANICAL PROPERTIES, PHYSICS OF STRENGTH, AND PLASTICITY
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Abstract

The behavior of an ideal crystal during fast heating when the settled life time of particles is substantially larger than the characteristic time of changing temperature is considered. A calculation model is a crystal with a simple cubic lattice, in which the interaction between particles is described by the Lenard-Jones potential. Disordering of the crystal on heating is considered to be a result of the formation of vacancies. Vacancies are shown to form during fast heating only in the case if the temperature is higher than a critical temperature Tc. An equation of state describing the behavior of a crystal with vacancies during fast heating has been derived. It is found that there is a temperature at which the crystal lattice losses the mechanical stability. This temperature is identified as the melting temperature on fast heating.

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Funding

This work was performed in the framework of the program of the studies by theme no. 17BF051-01 planned in the Research Laboratory “Physics of liquids, polymers, and phase transitions in them” at the Physical Department of Shevchenko National University of Kyiv.

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Authors and Affiliations

  1. Shevchenko National University of Kyiv, 03680, Kyiv, Ukraine

    L. A. Bulavin, Yu. F. Zabashta & L. Yu. Vergun

Authors
  1. L. A. Bulavin
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  2. Yu. F. Zabashta
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  3. L. Yu. Vergun
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Corresponding author

Correspondence to L. Yu. Vergun.

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The authors declare that they have no conflict of interest.

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Translated by Yu. Ryzhkov

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Bulavin, L.A., Zabashta, Y.F. & Vergun, L.Y. Melting Mechanism during Fast Heating. Phys. Solid State 61, 1246–1250 (2019). https://doi.org/10.1134/S1063783419070059

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  • DOI: https://doi.org/10.1134/S1063783419070059

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