Skip to main content
SpringerLink
Log in

The role of microsuperplastic flow in high temperature fracture of AL-9021 mechanically alloyed aluminium

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

Abstract

A relatively new fracture mechanism, labelled microsuperplasticity, has been found to occur at elevated temperatures in some powder metallurgical aluminium alloys. Specifically it has been found to occur in mechanically alloyed aluminium AL-9021, as well as in a rapidly solidified aluminium alloy. Under load at high temperatures the material fractures with the formation of superplastic fibres. The mechanism responsible for this fibre formation on the fracture surface is thought to be due to the loose bonds of oxygen along the periphery of the grain and subgrain boundaries. This behaviour has direct implications for the theories of superplasticity. It also helps in our understanding of mechanical alloys and powder metallurgical processing of aluminium alloys.

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. S. Gilman andJ. S. Benjamin,Ann. Rev. Mater. Sci. 13 (1983) 279.

    Google Scholar 

  2. J. S. Benjamin andM. J. Bomford,Met. Trans. 8A (1977) 1301.

    Google Scholar 

  3. W. J. D. Shaw, unpublished work (1987).

  4. W. J. D. Shaw andR. E. Rowell,Microstruct. Sci. 16 (1988) 349.

    Google Scholar 

  5. R. Sundaresan andF. H. Froes,J. Metals 39 (1987) 22.

    Google Scholar 

  6. W. J. D. Shaw,Mater. Lett. 6 (1987) 75.

    Google Scholar 

  7. Idem, ibid. 4 (1985) 1.

    Google Scholar 

  8. Idem, Micron Microscopica Acta. 16 (1985) 281.

    Google Scholar 

  9. S. F. Claeys, J. W. Jones andJ. E. Allison, “Dispersion Strengthened Aluminum Alloys”, edited by Y. W. Kim and W. M. Griffith (The Minerals, Metals and Materials Society, Warrendale, Pennsylvania, 1988) p. 323.

    Google Scholar 

  10. R. C. Gifkins andK. U. Snowden,Trans. Met. Soc. AIME 239 (1967) 910.

    Google Scholar 

  11. W. A. Baeslack III,Metallography 18 (1985) 73.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Mechanical Engineering, University of Calgary, T2N 1N4, Calgary, Alberta, Canada

    W. J. D. Shaw

Authors
  1. W. J. D. Shaw
    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

Shaw, W.J.D. The role of microsuperplastic flow in high temperature fracture of AL-9021 mechanically alloyed aluminium. J Mater Sci 24, 4114–4119 (1989). https://doi.org/10.1007/BF01168983

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01168983

Keywords

Search

Navigation