Skip to main content
SpringerLink
Log in

Alloy softening in Ni3Al polycrystals

  • Published:
Journal of Materials Science Aims and scope Submit manuscript

Abstract

The alloying effect of boron on localized deformation in Ni3Al polycrystals containing 24–26 at% AI was studied using microhardness indentation. Alloy softening was observed both along the grain boundaries and in the grain interior. The softening effect decreased as the aluminium concentration increased. For alloys of near-stoichiometric composition, the maximum effect occurred at about 0.23 at% (500 wt p.p.m.) boron. A softening mechanism based on cross slip of screw dislocations was proposed.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. J. W. Christian, Proceedings of the 2nd International Conference on Strength of Metals and Alloys, Vol. 1 (American Society of Metals, Metals Park, OH, 1970) p. 29.

    Google Scholar 

  2. M. G. Ulitchny, A. A. Sagues andR. Gibala. in “Defects in Refractory Metals”, edited by R. de Baptist, J. Nihoul and L. Stals (SCK. CENMol, Belgium, 1972) p. 245.

    Google Scholar 

  3. E. Pink andR. J. Arsenault,Progr. Mater. Sci. 24 (1979) l.

    Article  Google Scholar 

  4. T. Tanaka andS. Watanabe,Acta Metall. 19 (1971) 991.

    Article  CAS  Google Scholar 

  5. J. R. Stephens andW. R. Witzke,J. Less-common Metals 29 (1972) 371.

    Article  CAS  Google Scholar 

  6. Z. S. Basinski andJ. W. Christian,Aust. J. Phys. 13 (1960) 299.

    CAS  Google Scholar 

  7. Y. Nakada andA. S. Keh,Acta Metall. 16 (1968) 903.

    Article  CAS  Google Scholar 

  8. M. Garfinkle,Metall. Trans. 5 (1974) 2383.

    Article  CAS  Google Scholar 

  9. X. R. Qian andY. T. Chou, in Proceedings of the Materials Research Society's Symposium on Interfacial Structure, Properties, and Design, edited by M. H. Yoo, C. L. Briant and W. A. T. Clark (Materials Research Society Press, Pittsburgh, 1988) p. 311.

    Google Scholar 

  10. K. Aoki andO. Izumi,Nippon Kinzoku Gakkaishi 43 (1979) 1190.

    CAS  Google Scholar 

  11. C. T. Liu andC. C. Koch, “Technical Aspects of Critical Materials used by the Steel Industry”, Vol. 1113, NBSIR 83-2679-9 (National Bureau of Standards, Gaithersburg, MD, 1983).

    Google Scholar 

  12. C. T. Liu, C. L. White andJ. A. Horton,Acta Metall. 33 (1985) 213.

    Article  CAS  Google Scholar 

  13. J. A. Horton andM. K. Miller,ibid. 35 (1986) 133.

    Google Scholar 

  14. P. S. Khadkikar, K. Vedula andB. S. Shabel,Metall. Trans. 18A (1987) 425.

    CAS  Google Scholar 

  15. S. C. Huang, A. I. Taub andK. M. Chang,Acta Metall. 32 (1984) 1703.

    Article  CAS  Google Scholar 

  16. E. M. Schulson, T. P. Weihs, I. Baker, H. J. Frost andJ. A. Horton,ibid. 34 (1986) 1395.

    Article  CAS  Google Scholar 

  17. T. P. Weihs,V. Zinoviev, D. V. Viens andE. M. Schulson,ibid. 35 (1987) 1109.

    Article  CAS  Google Scholar 

  18. X. R. Qian andY. T. Chou,Mater. Lett. 6 (1988) 157;Scripta Met. 22 (1988) 725.

    Article  CAS  Google Scholar 

  19. Idem. andY. T. Chou, in Proceedings of the Materials Research Society's Symposium on High Temperature Ordered Intermetallic Alloys, edited by C. C. Koch, C. T. Liu, N. S. Stoloff and A. I. Taub (Materials Research Society Press, Pittsburgh, PA 1989) p. 529. (Note: The captions for this paper, Figs 1 and 2 should be interchanged).

    Google Scholar 

  20. I. Baker, E. M. Schulson andJ. A. Horton,Acta Metall. 35 (1987) 1533.

    Article  CAS  Google Scholar 

  21. E. M. Schulson, I. Baker andH. J. Frost, in Proceedings of the Materials Research Society's Symposium on High Temperature Ordered Intermetallic Alloys II, edited by N. S. Stoloff, C. C. Koch, C. T. Liu and O. Izumi (Materials Research Society Press, Pittsburgh, PA 1987) p. 195.

    Google Scholar 

  22. A. I. Taub, S. C. Huang andK. M. Chang, in Proceedings of the 39th Meeting of the Mechanical Failure Prevention Group, edited by J. G. Early, T. R. Shivers and J. H. Smith (Cambridge University Press, New York, 1985) p. 57.

    Google Scholar 

  23. C. T. Liu, C. L. White, C. C. Koch andE. H. Lee, in Proceedings of the Electrochemical Society on High Temperature Materials, edited by Munir Cubicciotti (Electrochemical Society, 1983) p. 32.

  24. T. Takasugi, N. Masahashi andO. Izumi,Acta Metall. 35 (1987) 381.

    Article  CAS  Google Scholar 

  25. H. Matsui andH. Kimura,Mater. Sci. Engng 40 (1979) 207.

    Article  CAS  Google Scholar 

  26. A. Sato andM. Meshii,Acta Metall. 21 (1973) 753.

    Article  CAS  Google Scholar 

  27. N. S. Stoloff andR. G. Davies,Prog. Mater. Sci. 13 (1966) 3.

    Google Scholar 

  28. D. P. Pope andS. S. Ezz,Int. Metall. Rev. 29 (1984) 136.

    CAS  Google Scholar 

  29. S. M. Copley andB. H. Kear,Trans. AIME 239 (1967) 977.

    CAS  Google Scholar 

  30. V. Paidar, D. P. Pope andV. Vitek,Acta Metall. 32 (1984) 435.

    Article  CAS  Google Scholar 

  31. T. Suzuki, Y. Oya andD. M. Wee,ibid. 28 (1980) 301.

    Article  CAS  Google Scholar 

  32. D. M. Wee, O. Noguchi,Y. Oya andT. Suzuki,Trans. Jpn Inst. Met. 21 (1980) 237.

    CAS  Google Scholar 

  33. J. J. Gilman,J. Appl. Phys. 36 (1965) 3195.

    Article  CAS  Google Scholar 

  34. M. H. Yoo, in Proceedings of the Materials Research Society's Symposium on High Temperature Ordered Intermetallic Alloys II, edited by N. S. Stoloff, C. C. Koch, C. T. Liu and O. Izumi (Materials Research Society Press, Pittsburgh, PA 1987) p. 207.

    Google Scholar 

  35. B. W. Christ,Acta Metall. 17 (1969) 1317.

    Article  CAS  Google Scholar 

  36. C. L. Formby,Phil. Mag. 14 (1966) 745.

    Article  CAS  Google Scholar 

  37. J. R. Low, Jr. andR. W. Guard,Acta Metall. 7 (1959) 171.

    Article  CAS  Google Scholar 

  38. A. Dasgupta, L. C. Smedskjaer,D. G. Legniki andR. W. Siegel,Mater. Lett. 3 (1985) 457.

    Article  CAS  Google Scholar 

  39. J. A. Lopez andG. F. Hancock,Phys. Status Solidi (a) 2 (1970) 469.

    Article  CAS  Google Scholar 

  40. R. D. Rawlings andA. Staton-Bevan,J. Mater. Sci. 10 (1975) 505.

    Article  CAS  Google Scholar 

  41. O. Noguchi,Y. Oyz andT. Suzuki,Metall. Trans. 12A (1981) 1647.

    Google Scholar 

  42. T. K. Chaki,Phil. Mag. Lett. 61 (1990) 5.

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Materials Science and Engineering, and Materials Research Center, Lehigh University, 18095, Bethlehem, PA, USA

    X. R. Qian & Y. T. Chou

Authors
  1. X. R. Qian
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Y. T. Chou
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Qian, X.R., Chou, Y.T. Alloy softening in Ni3Al polycrystals. J Mater Sci 27, 1036–1044 (1992). https://doi.org/10.1007/BF01197658

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01197658

Keywords

Search

Navigation