Advertisement

Journal of Materials Science

, Volume 30, Issue 16, pp 3983–3988 | Cite as

An investigation of grain-boundary plane crystallography in polycrystalline nickel

  • V. Randle
Article

Abstract

An investigation has been carried out to measure and categorize the grain-boundary plane indices of boundaries in pure nickel. Coincidence site lattices (excluding Σ = 3s) were found to be either asymmetrical tilt boundaries with high indices, or have irrational boundary planes. For the Σ=3s, almost half were asymmetrical tilt boundaries displaced from the 111/111 symmetrical tilt boundary on the 110 zone. Such boundaries have low energies compared to other Σ=3s. The 211/211 incoherent twin was not observed, which was explained on the basis of its higher energy compared to other boundaries on the 110 zone. The results are compared and contrasted with previous data, where boundaries abutted the specimen surface during annealing, which is not the case for the present data. Comments are made with respect to the relationship between macroscopic and atomic-level boundary geometry and implications of the results for grain-boundary properties.

Keywords

Polymer Nickel Material Processing Site Lattice High Index 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    J. Furley and V. Randle, Mater. Sci. Technol. 7 (1991) 12.CrossRefGoogle Scholar
  2. 2.
    D. P. Field and B. L. Adams, Acta Metall. Mater. 40 (1992) 1145.CrossRefGoogle Scholar
  3. 3.
    V. Randle, “Microtexture determination and its applications” (Institute of Materials, London. 1992).Google Scholar
  4. 4.
    Idem, “The measurement of grain boundary geometry” (Institute of Physics, Bristol, 1993).Google Scholar
  5. 5.
    D. Wolf and J. F. Lutsko, Z. Kristallogr. 189 (1989) 239.Google Scholar
  6. 6.
    V. Randle, Acta Crystallogr. A50 (1994) 588.CrossRefGoogle Scholar
  7. 7.
    Idem, Acta Metall. Mater. 42 (1994) 1769.CrossRefGoogle Scholar
  8. 8.
    Idem, Mater. Char., in press.Google Scholar
  9. 9.
    S. C. Mehta and D. A. Smith, in “International symposium on grain boundary engineering”, edited by U. Erb and G. Palumbo (Canadian Institute of Mining, Metals and Petrology”, Montreal, 1993) p. 1.Google Scholar
  10. 10.
    D. G. Brandon, Acta Metall. 14 (1966) 1479.CrossRefGoogle Scholar
  11. 11.
    G. Herrmann, H. Gleiter and G. Baro, ibid. 24 (1976) 353.CrossRefGoogle Scholar
  12. 12.
    S. I. Wright and F. Heidelbach, Mater. Sci. Forum 157–162 (1994) 1313.CrossRefGoogle Scholar
  13. 13.
    G. Palumbo and K. T. Aust, in “Materials interfaces: atomic level structure and properties”, edited by D. Wolf and S. Yip (Chapman and Hall, London, 1992) p. 190.Google Scholar
  14. 14.
    U. Wolf, F. Ernst, T. Muschik, M. W. Finnis and H. F. Fischmeister, Philos. Mag. A 66 (1992) 991.CrossRefGoogle Scholar
  15. 15.
    R. Omar, PhD thesis, University of Warwick, UK (1987).Google Scholar
  16. 16.
    K. L. Merkle and D. Wolf, Philos. Mag. A 65 (1992) 513.CrossRefGoogle Scholar
  17. 17.
    G. H. Bishop and B. Chalmers, Scripta Metall. 2 (1968) 133.CrossRefGoogle Scholar

Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • V. Randle
    • 1
  1. 1.Department of Materials EngineeringUniversity College of SwanseaSwanseaUK

Personalised recommendations