Soviet Physics Journal

, Volume 32, Issue 5, pp 339–343 | Cite as

Dislocation detachment from weak attachment points

  • I. T. Suprun
Solid State Physics


Detachment of dislocations from weak attachment points under the action of a periodic external stress is considered with defect diffusion along dislocations being possible. The expression obtained for the probability of detachment is studied numerically for various amplitudes and durations of the external stress at various concentrations and strengths of the attachment points. Attachment point diffusion increases the probability of detachment, while as the interaction between the dislocation and the point defect increases, the influence of that phenomenon increases as well. Change in the probability of detachment during the excitation process should lead to time dependence of hysteresis-type dislocation internal friction.


Time Dependence Point Defect Internal Friction External Stress Attachment Point 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Literature cited

  1. 1.
    C. Bauer, Contemporary Problems in Dislocation Theory [Russian translation], Mir, Moscow (1968), p. 98.Google Scholar
  2. 2.
    I. T. Suprun, Fiz. Met. Metalloved.,59, No. 4, 661 (1985).Google Scholar
  3. 3.
    A. Granato and K. Luecke, Ultrasound Methods for Dislocation Study [Russian translation], IL., Moscow (1963), p. 27.Google Scholar
  4. 4.
    D. H. Rogers, J. Appl. Phys.,33, No. 3, 781 (1962).Google Scholar
  5. 5.
    I. T. Suprun, Phys. Status Solidi (a),74, No. 2, 411 (1982).Google Scholar
  6. 6.
    E. K. Naimi and I. T. Suprun, Izv. Vyssh. Uchebn. Zaved., Fiz., No. 6, 114 (1984).Google Scholar
  7. 7.
    I. T. Suprun, Fiz. Met. Metalloved.,44, No. 1, 90 (1977).Google Scholar
  8. 8.
    K. Yamafuji and C. Bauer, Contemporary Problems in Dislocation Theory [Russian translation], Mir, Moscow (1968), p. 115.Google Scholar
  9. 9.
    M. A. Krishtal and S. A. Golovin, Internal Friction and Metal Structure [in Russian], Metallurgiya, Moscow (1976), p. 376.Google Scholar

Copyright information

© Plenum Publishing Corporation 1989

Authors and Affiliations

  • I. T. Suprun
    • 1
  1. 1.Moscow Institute of Steels and AlloysUSSR

Personalised recommendations