Atomic-Scale Modelling of Dislocation Behaviour under Stress

  • D. J. Bacon
  • Yu. N. Osetsky
Part of the Solid Mechanics and Its Applications book series (SMIA, volume 114)


Computer simulation is used to investigate glide of an edge dislocation in cc-iron over large distances on the atomic scale and in the presence of obstacles in the form of either voids or coherent copper precipitates. Strength characteristics and dislocation configuration information are obtained, and atomic-scale mechanisms associated with strengthening due to these obstacles are identified. The role of a dislocation-induced phase transformation in the larger copper precipitates is revealed. The results are compared with those obtained from models based on continuum treatments.


computer simulation dislocation line tension precipitates voids yield strength 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Osetsky Yu. N., Bacon D.J., 2002, Modelling Simul Mater. Sei. Eng., submitted.Google Scholar
  2. 2.
    Baskes M.I. and Daw M.S., 1989, in Fourth Int. Conf. On the Effects of Hydrogen on the Behaviour of Materials (Jackson Lake Lodge, Moran, WY) eds. N. Moody and A. Thompson (The Minerals, Metals and Materials Society, Warrendale, PA).Google Scholar
  3. 3.
    Othen P.J., Jenkins M.L. and Smith G.D.W., 1994, Phil. Mag. A 70, 1.Google Scholar
  4. 4.
    Ackland G.J., Bacon D.J., Calder A.F. and Harry T., 1997, Philos.Mag. A, 75, 713.CrossRefGoogle Scholar
  5. 5.
    Ackland, G.J., Tichy, G., Vitek, V. and Finnis, M.V., 1987, Philos. Mag. A, 56, 735.CrossRefGoogle Scholar
  6. 6.
    Hull D. and Bacon D.J., 2001, Introduction to Dislocations, 4 th edition (Butterworth-Heinemann, Oxford)Google Scholar
  7. 7.
    Bacon D.J., 1985, in Fundamentals of Deformation and Fracture (eds B.A. Bilby, K.J. Miller and J.R. Willis), Cambridge University Press, 1985, p.401.Google Scholar
  8. 8.
    Bacon D.J., Kocks U.F. and Scattergood R.O., 1973, Philos.Mag., 28, 1241.CrossRefGoogle Scholar
  9. 9.
    Scattergood R.O., Bacon D.J., 1982, Acta Metall, 30, 1665.CrossRefGoogle Scholar
  10. 10.
    Harry T. and Bacon D.J., 2002a, Acta Mat, 50, 195; 2002b, Ibid, 209.CrossRefGoogle Scholar
  11. 11.
    Hu S.Y., Shmauder S. and Chen L.Q., 2000, Phys. Stat. Sol.(b) 220, 845.CrossRefGoogle Scholar
  12. 12.
    Russell K.C., Brown L.M., 1972, Acta. Metall, 20, 969.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2004

Authors and Affiliations

  • D. J. Bacon
    • 1
  • Yu. N. Osetsky
    • 1
  1. 1.Department of EngineeringThe University of LiverpoolLiverpoolUK

Personalised recommendations