Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

Source of dislocations in the field of discrete stoppers

  • 17 Accesses

  • 1 Citations


The formation of a dislocation loop by the Frank-Read mechanism in an obstacle field is simulated on a computer in the approximation of constant linear tension. The dependence of the loop formation time on the voltage, the source length, and the temperature are studied. It is shown that the bending time of a dislocation segment to the critical configuration makes the main contribution to the loop formation time. The effective activation energy and the effective activation volume are calculated from the results of the simulation.

This is a preview of subscription content, log in to check access.

Literature cited

  1. 1.

    J. W. Morris Jr. and C. K. Syn, J. Appl. Phys.,45, No. 2, 961–963 (1974).

  2. 2.

    S. I. Zaitsev, Defects in Crystals and Their Modeling on a Computer [in Russian], Nauka, Leningrad (1980), pp. 200–215.

  3. 3.

    A. Forman and M. Maikin, Current Problems in the Theory of Dislocations [Russian translation], Mir, Moscow (1968), pp. 200–215.

  4. 4.

    P. B. Steif and R. J. Clifton, Mater. Sci. Eng.,41, No. 2, 251–258 (1979).

  5. 5.

    Lei Shung-Zi Latu and Shang-Hsu Shin, Mater. Sci. Eng.,49, No. 2, 133–139 (1981).

  6. 6.

    L. E. Popov, V. S. Kobytev, and T. A. Kovalevskaya, Plastic Deformation of Alloys [in Russian], Metallurgiya, Moscow (1984).

  7. 7.

    V. I. Vladimirov, Physical Nature of Fracture in Metals [in Russian], Metallurgiya, Moscow (1984).

  8. 8.

    J. Friedel, Dislocations, Pergamon, New York (1964).

  9. 9.

    N. A. Tyapunina, V. V. Blagoveshchenskii, G. M. Zinenkova, and A. L. Lomakin, Plastic Strain in Alloys [in Russian], Tomsk (1986), pp. 66–80.

Download references

Author information

Additional information

Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 12, pp. 20–24, December, 1990.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Slobodskoi, M.I., Golosova, T.N. & Popov, L.E. Source of dislocations in the field of discrete stoppers. Soviet Physics Journal 33, 1002–1005 (1990). https://doi.org/10.1007/BF00895274

Download citation


  • Activation Energy
  • Stopper
  • Effective Activation
  • Activation Volume
  • Formation Time