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Nucleation of interstitial dislocation loops in metals under electron irradiation

  • Physicochemical Basics of the Design of Materials and Technologies
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Inorganic Materials: Applied Research Aims and scope

Abstract

A hybrid model of the dislocation loop nucleation in metals during electron irradiation is proposed. The model is based on the kinetic diffusion mechanism of formation and growth of three-dimensional interstitial atomic clusters and the thermodynamic mechanism of intermittent transformation of these clusters in dislocation loops. The existence of critical input rate G C of freely migrating point defects is established. When G < G C , loops of minimum size consisting of four atoms are formed at the stage of nucleation. With increasing G at G > G C , the number of interstitial atoms increases (n 0 ≥ 4). By analyzing experimental data for the electron-irradiated aluminum, it is shown that, using the formulas of the proposed model, one can calculate all parameters of nucleation of interstitial dislocation loops at a given magnitude of the input rate of freely migrating defects without performing experimental studies.

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Authors and Affiliations

  1. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia

    Yu. M. Platov

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  1. Yu. M. Platov
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Correspondence to Yu. M. Platov.

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Original Russian Text © Yu.M. Platov, 2014, published in Perspektivnye Materialy, 2014, No. 1, pp. 5–12.

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Platov, Y.M. Nucleation of interstitial dislocation loops in metals under electron irradiation. Inorg. Mater. Appl. Res. 5, 437–443 (2014). https://doi.org/10.1134/S2075113314050141

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  • DOI: https://doi.org/10.1134/S2075113314050141

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