Skip to main content
SpringerLink
Log in

Micronecking and fracture in cavitated superplastic materials

  • Published:
Metallurgical and Materials Transactions A Aims and scope Submit manuscript

Abstract

A model of cavity growth is used to describe neck development in the ligament between voids and fracture strain of cavitated superplastic materials. The results show that the strain-rate sensitivity index has an important effect on fracture strain only at low values of cavity growth rate. This is more appreciable for a lesser initial cavitation level. The initial cavitation level weakly influences the fracture strain, in contrast to the result for the cavity growth rate. It is seen that the present fracture criterion fits well the experimental results for several superplastic materials.

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. D.W. Livesey and N. Ridley:Metall. Trans. A, 1982, vol. 13A, pp. 1619–29.

    Google Scholar 

  2. C.W. Humpheries and N. Ridley:J. Mater. Sci., 1978, vol. 13, pp. 2477–82.

    Article  Google Scholar 

  3. J.W.D. Paterson and N. Ridley:J. Mater. Sci., 1981, vol. 16, pp. 457- 64.

    Article  Google Scholar 

  4. M. Adley, E.M. El Banna, H.A. Megahed, and M. Zaki:Mater. Lett., 1994, vol. 19, pp. 93–94.

    Article  Google Scholar 

  5. J. Lian and M. Suery:Mater. Sci. Technol, 1986, vol. 2, pp. 1093- 98.

    Google Scholar 

  6. J.J. Jonas and B. Baudelet:Acta Metall., 1972, vol. 25, pp. 43–50.

    Google Scholar 

  7. A.R. Ragab and M. Zaki :Int. Conf. on Fracture of Engineering Materials and Structures, Singapore, Aug. 6-8, 1990, Elsevier Science Publishers, pp. 810-20.

  8. M.J. Stowell:Met. Sci., 1983, vol. 17, pp. 1–11.

    Article  Google Scholar 

  9. W. Beere and M.V. Speight:Met. Sci., 1987, vol. 12, pp. 172–76.

    Google Scholar 

  10. D. Zhou, J. Lian, and Y. Liu:Int. J. Mech Sci., 1989, vol. 20, pp. 1159–64.

    Google Scholar 

  11. M.J. Stowell:Met. Sci., 1980, vol. 14, pp. 267–71.

    Article  CAS  Google Scholar 

  12. J. Pilling and N. Ridley:Acta Metall., 1986, vol. 34, pp. 669–79.

    Article  CAS  Google Scholar 

  13. A.C.K. Cocks and M.F. Ashby:Met. Sci., 1982, vol. 16, pp. 465–74.

    Article  Google Scholar 

  14. J.R. Rice and D.W. Tracey:J. Mech. Phys. Solids, 1969, vol. 17, pp. 201–17.

    Article  Google Scholar 

  15. M. Zaki: Ph.D. Thesis, Cairo University, Giza, Egypt, 1990.

Download references

Author information

Authors and Affiliations

  1. Department of Mechanical Design and Production, Faculty of Engineering, Cairo University, 12316, Giza, Egypt

    Mohamed Zaki (Assistant Professor)

Authors
  1. Mohamed Zaki
    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

Zaki, M. Micronecking and fracture in cavitated superplastic materials. Metall Mater Trans A 27, 1043–1046 (1996). https://doi.org/10.1007/BF02649772

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02649772

Keywords

Search

Navigation