Skip to main content
SpringerLink
Log in

Effect of prestrain on the superplastic behaviour of a fine grained 7475 AI alloy

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

Abstract

The effect of prestraining at a fast strain rate (region III) on the subsequent superplastic behaviour (region II) of a 7475 AI alloy has been studied. The results show that prestraining causes a decrease in the elongation to failure as compared to the non-prestrained (as-received) samples. This decrease in elongation is postulated to be associated with the growth of cavities formed during prestraining as well as grain growth during deformation in region II. Prestraining in region III did not lead to any observable inhomogeneities in strain distribution during subsequent deformation.

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. P. W. Davies, J. D. Richards andB. Wilshire,J. Inst. Metals 90 (1961-1962) 431.

    Google Scholar 

  2. J. O. Parker andB. Wilshire,Mater. Sci. Engng 43 (1980) 271.

    Google Scholar 

  3. H. Burt, I. C. Elliot andB. Wilshire,Met. Sci. 15 (1981) 421.

    Google Scholar 

  4. B. F. Dyson,Can. Metall. Q. 13 (1974) 237.

    Google Scholar 

  5. B. F. Dyson andM. J. Rodgers,Met. Sci. 8 (1974) 26.

    Google Scholar 

  6. M. M. I. Ahmed andT. G. Langdon,J. Mater. Sci. 18 (1983) 3535.

    Google Scholar 

  7. J. A. Wert, N. E. Paton, C. H. Hamilton andM. W. Mahoney,Met. Trans. A 12A (1981) 1267.

    Google Scholar 

  8. R. K. Mahidhara,J. Eng. Materials and Performance (in press).

  9. C. H. Hamilton, C. C. Bampton andN. E. Paton, In “Superplastic Forming of Structural Alloys“, edited by C. H. Hamilton and N. E. Paton (The Metallurgical Society of the American Institute of Mining, Metallurgical and Petroleum Engineers, Warrendale, PA, 1982) p. 173.

    Google Scholar 

  10. T. G. Langdon,Met. Sci. 16 (1982) 175.

    Google Scholar 

  11. A. K. Ghosh, in Proceedings of the Second RISO International Symposium on Metallurgy and Materials Science, Roskilde, Denmark, 1981, edited by N. Hansen, A. Horsewell, T. Leffers and H. Lilholt (Riso National Laboratory, Denmark, 1981) p. 277.

    Google Scholar 

  12. M. K. Rao andA. K. Mukherjee,Scripta Metall. 20 (1986) 411.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. High Performance Materials Inc., Washington University, Campus Box 1087, 63130, St Louis, MO, USA

    R. K. Mahidhara

  2. Department of Chemical Engineering and Materials Science, University of California, 95616, Davis, CA, USA

    A. K. Mukherjee

Authors
  1. R. K. Mahidhara
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. A. K. Mukherjee
    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

Mahidhara, R.K., Mukherjee, A.K. Effect of prestrain on the superplastic behaviour of a fine grained 7475 AI alloy. J Mater Sci 31, 381–385 (1996). https://doi.org/10.1007/BF01139155

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01139155

Keywords

Search

Navigation