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On the micromechanisms of repeated precipitation on edge dislocations

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Abstract

Refinements on the model for repeated precipitation on dislocations are advanced, taking account of the anisotropy of the matrix structure. In anisotropic materials the climbing dislocations tend to take up low-energy directions between the precipitates, and it is suggested that this forces the growing precipitates and the connecting dislocation segments to migrate with the same speed throughout each growth cycle. A periodically varying precipitate density along the advancing dislocation may facilitate this energetically favourable appearance of the growth front. The dendritic growth phenomenon encountered in some precipitation systems is suggested to be a result of high jog energies and a low nucleation frequency.

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References

  1. J. M. Silcock and W. J. Tunstall, Phil. Mag. 10 (1964) 361.

    Google Scholar 

  2. E. Nes and J. K. Solberg, J. Appl. Phys. 44 (1973) 486.

    Google Scholar 

  3. Idem, ibid. 44 (1973) 488.

    Google Scholar 

  4. J. K. Solberg and E. Nes, Phil. Mag. A37 (1978) 465.

    Google Scholar 

  5. E. Nes, Acta Met. 22 (1974) 81.

    Google Scholar 

  6. J. E. Lawrence and H. Koehler, J. Sci. Instrum. 42 (1965) 270.

    Google Scholar 

  7. I. L. F. Ray and D. J. H. Cockayne, Proc. Roy. Sco. Lond. A325 (1971) 543.

    Google Scholar 

  8. E. Nes and J. Washburn, J. Appl. Phys. 42 (1971) 3562.

    Google Scholar 

  9. Idem, ibid. 43 (1972) 2005.

    Google Scholar 

  10. J. P. Hirth and J. Lothe, “Theory of Dislocations” (McGraw-Hill, New York, 1968).

    Google Scholar 

  11. P. B. Hirsch et al, “Electron Microscopy of Thin Crystals” (Butterworths, London, 1965) 185.

    Google Scholar 

  12. V. K. Heikkinen and T. J. Hakkarainen, Phil. Mag. 28 (1973) 237.

    Google Scholar 

  13. J. S. T. van Aswegen, R. W. K. Honeycombe and D. H. Warrington, Acta Met 12 (1964) 1.

    Google Scholar 

  14. J. Silcock, Central Electricity Research Laboratories, Report No. R.D./L/R 1288.

  15. R. Räty and H. M. Miekk-Oja, Phil. Mag. 18 (1968) 1105.

    Google Scholar 

  16. Idem, ibid. 21 (1971) 1197.

    Google Scholar 

  17. P. Guyot and M. Wintenberger, J. Mater. Sci. 9 (1974) 614.

    Google Scholar 

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Author notes

  1. J. K. Solberg

    Present address: Central Institute for Industrial Research, Oslo, Norway

Authors and Affiliations

  1. Department of Physics, University of Oslo, Norway

    J. K. Solberg & E. Nes

Authors
  1. J. K. Solberg
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  2. E. Nes
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Solberg, J.K., Nes, E. On the micromechanisms of repeated precipitation on edge dislocations. J Mater Sci 13, 2233–2240 (1978). https://doi.org/10.1007/BF00541679

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  • DOI: https://doi.org/10.1007/BF00541679

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