“PARADOX” OF THE VOID NUCLEATION

doi:10.26565/2312-4334-2014-3-13

I. N. Laptev National Scientific Center “Kharkiv Institute of Physics and Technology”1, Akademicheskaia St., Kharkov, 61108, Ukraine
O. O. Parkhomenko National Scientific Center “Kharkiv Institute of Physics and Technology” 1, Akademicheskaia St., Kharkov, 61108, Ukraine V.N. Karazin Kharkov National University 4 Svobody Sq., Kharkov, 61022, Ukraine
Viktor I. Tkachenko National Scientific Center “Kharkiv Institute of Physics and Technology”1, Akademicheskaia St., Kharkov, 61108, UkraineV.N. Karazin Kharkov National University4 Svobody Sq., Kharkov, 61022, Ukraine https://orcid.org/0000-0002-1108-5842

DOI: https://doi.org/10.26565/2312-4334-2014-3-13

Abstract

On the basis of advanced before a method of phase diagrams martensitic transformations into systems such as « iron - carbon - vacancies », are determined energy of activation of formation of vacancies and voids. It is shown, that elastic volumetric deformation 11-th elementary tetragonal cells of iron (circuit Бейна) on 4,2 %, leads to formation of one structural vacancy. The data testify to significant power advantage of formation of vacancies (0.04 eV) and voids the critical size (3eV) on the mechanism of the opposites martensitic transformations, in comparison with ordinary diffusion mechanism (more 1eV- vacancy, and some tens eV-the void).

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Author Biography

I. N. Laptev, National Scientific Center “Kharkiv Institute of Physics and Technology”1, Akademicheskaia St., Kharkov, 61108, Ukraine

Laptev@KIPT.KHARKOV.UA

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