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Hierarchy of statistical ensembles of nanodefects on the surface of stressed molybdenum

  • Defects, Dislocations, and Physics of Strength
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Abstract

The evolution of the distribution of nanodefects that are formed under the effect of tensile stresses existing at the surface of polished foils of molybdenum was studied. The nanodefects form four statistical ensembles in which the size distribution is determined by the maximum of the configurational entropy. The energy of formation and the average size of nanodefects in adjacent ensembles differ by a factor of three. When the concentration of nanodefects in one of the ensembles reaches a thermodynamically optimum value of ≈5%, part of the nanodefects annihilates and the other part becomes transformed into nanodefects of the next (higher) hierarchical level. The application of a load to the sample studied continuously generates nanodefects that form the first (lowest-level) ensemble, which leads to periodic oscillations in the concentrations of nanodefects in all four ensembles.

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Authors and Affiliations

  1. St. Petersburg State Technical University, Politekhnicheskaya ul. 29, St. Petersburg, 195251, Russia

    A. Ya. Bashkarev

  2. Ioffe Physicotechnical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021, Russia

    V. I. Vettegren’ & V. N. Svetlov

Authors
  1. A. Ya. Bashkarev
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  2. V. I. Vettegren’
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  3. V. N. Svetlov
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__________

Translated from Fizika Tverdogo Tela, Vol. 44, No. 7, 2002, pp. 1260–1265.

Original Russian Text Copyright © 2002 by Bashkarev, Vettegren’, Svetlov.

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Bashkarev, A.Y., Vettegren’, V.I. & Svetlov, V.N. Hierarchy of statistical ensembles of nanodefects on the surface of stressed molybdenum. Phys. Solid State 44, 1316–1322 (2002). https://doi.org/10.1134/1.1494628

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  • DOI: https://doi.org/10.1134/1.1494628

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