Abstract
A detailed analysis of the effect of frictional forces on the stability of dislocation loops lying in their glide planes and the effect of these forces on the cross-slip behaviour of these loops under both applied stresses as well as internal stresses arising from other dislocation loops, has been made. In addition, the passing as well as cross-slip behaviour of non-coaxial dislocation loops has been analyzed and it is shown that these loops could give rise to Frank-Read sources by way of cross-slip; and the conditions for generations of such Frank-Read sources have been determined. The results show that depending upon strain, the cross-slip of dislocation loops could lead to regeneration of dislocation and subsequent work-hardening, or to dynamic recovery or stage III deformation. The significance of the above results in relation to the behaviour of dislocation loops observed in real crystals is discussed in detail.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
K. Sadananda andM. J. Marcinkowski,J. Appl. Phys. 43 (1972) 2609.
Idem, Phys. Stat. Sol. a21 (1974) 581.
Idem, to be published.
A. H. Cottrell, “Dislocations and Plastic Flow in Crystals” (Clarendon Press, Oxford, 1953).
J. S. Koehler,Phys. Rev. 86 (1952) 52.
J. J. Gilman andW. G. Johnston, “Dislocations and Mechanical Properties of Crystals”, edited by J. C. Fisher, W. G. Johnston, R. Thomson and T. Vreeland (Wiley, New York, 1956) p. 116.
J. R. Low andR. W. Guard,Acta Met. 1 (1959) 171.
J. R. Low andA. M. Turkalo,ibid 10 (1962) 215.
F. Minari, B. Pichaud andL. Capella,Phil. Mag. 31 (1975) 275.
J. C. M. Li andG. C. T. Liu, “Proceedings of the International Conference on the Strength of Metals and Alloys”, Suppliment toTrans. Jap. Inst. Metals 9 (1968) 20.
J. P. Hirth andJ. Lothe, “Theory of Dislocations” (McGraw Hill, New York, 1968) p. 135.
T. Jossang, L. Lothe andK. Skylstad,Acta Met. 13 (1965) 297.
T. Jossang,Phys. Stat. Sol. 27 (1969) 579.
K. Sadananda andM. J. Marcinkowski,Phys. Stat. Sol. a27 (1975) 141.
M. J. Marcinkowski andD. E. Campbell, “Ordered Alloys-Structural Application and Physical Metallurgy”, edited by B. K. Kear, C. T. Sims, N.S. Stoloff and W. H. Westbrook (Claitor's, Baton Rouge, 1970) p. 331.
P. R. Swann, “Electron Microscopy and Strength of Crystals”, edited by G. Thomas and J. Washburn (Interscience, New York, 1963) p. 131.
A. Seeger, “Work hardening”, edited by J.P. Hirth and J. Weertman (Gordan and Breach, New York, 1968) p. 27.
J. T. Fourie andH. G. F. Wilsdorf,J. Appl. Phys. 31 (1960) 2219.
F. R. N. Nabarro, Z. S. Basinski andD. B. Holt,Adv. Phys.,13 (1964) 193.
P. B. Price,Phil. Mag. 5 (1960) 873.
Idem, J. Appl. Phys.,32 (1961) 1750.
J. Washburn,Phil. Mag. 5 (1960) 991.
W. C. Dash,J. Appl. Phys. 29 (1958) 705.
A. Seeger andS. Mader,Phys. Stat. Sol. 1 (1961) K78.
A. S. Tetelman,Acta Met. 10 (1962) 813.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Sadananda, K. Effect of frictional forces on the behaviour of dislocation loops. J Mater Sci 10, 2082–2091 (1975). https://doi.org/10.1007/BF00557487
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00557487