Skip to main content
SpringerLink
Log in

A microplasticity analysis of shear band cracks in rolled 2024 aluminium alloy

  • Published:
International Journal of Fracture Aims and scope Submit manuscript

Abstract

Flow localization in the form of shear bands is an important part of the ductile fracture process. The propagation of shear-band cracks has been followed in the rolling of an annealed and an aged-hardened 2024 aluminium alloy respectively. Shear bands occurred in the alloy that had been aged-hardened prior to rolling but not in the one that had been annealed. There are two types of observed shear bands: grain-scale shear bands and sample-scale shear bands. The shear-band cracks were found to propagate along the directions of the sample-scale shear bands which often deviate from the maximum shear stress plane of 45°. While some grains allowed the cracks to pass through, some grains would stop the cracks from growing. A material based constitutive equation was used to predict the angle of the shear-band cracks and the prediction agreed well with the observed ones. The propagation of the shear-band cracks were found to be sensitive to the local variation of the crystallographic texture proportion. Both the microplasticity and continuum theories point out the importance of strain hardening rate as an important controlling factor in the occurrence of shear band cracks in textured polycrystals.

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. K. Brown, Journal of The Institute of Metals 100 (1972) 341–345.

    Google Scholar 

  2. A.R. Mirshams, Ph.D. thesis, University of Birmingham (1980).

  3. D.V. Wilson, Journal of Mechanical Working Technology 16 (1988) 257–277.

    Google Scholar 

  4. F.A. McClintock, S.M. Kaplan and C.A. Berg, International Journal of Fracture Mechanics 2 (1966) 614–627.

    Google Scholar 

  5. J.W. Hutchinson and V. Tvergaard, International Journal of Solids and Structures 17 (1981) 451–470

    Google Scholar 

  6. B. Dodd and Y. Bai, Ductile Fracture and Ductility, Academic Press (1987).

  7. M. Hatherly and M.S. Malin, Scripta Metallurgica 18 (1984) 445–454.

    Google Scholar 

  8. G.R. Canova, U.F. Kocks and M.G. Stout, Scripta Metallurgica 18 (1984) 437–442

    Google Scholar 

  9. S.V. Harren, H.E. Deve and R.J. Asaro, Acta Metallurgica 36 (1988) 2435–248

    Google Scholar 

  10. R.J. Asaro, Advances in Applied Mechanics 2 (1988) 1–115.

    Google Scholar 

  11. I.L. Dillamore, J.G. Roberts and A.C. Bush, Metal Science 13 (1979) 73–77.

    Google Scholar 

  12. P. Van Houtte, J. Gil Sevillano and E. Aernoudt, Zhurnal Metallkde 70 (1979) 426–432.

    Google Scholar 

  13. G.R. Canova, U.F. Kocks and M.G. Stout, Scripta Metallurgica 18 (1984) 437–442.

    Google Scholar 

  14. W. Y. Yeung and B.J. Duggan, Acta Metallurgica 35 (1987) 541–548.

    Google Scholar 

  15. K. Mori, H. Mecking and Y. Nakayama, Acta Metellurgica 33 (1985) 379–386.

    Google Scholar 

  16. M. Blicharski and S. Gorczyca, Metal Science 12 (1978) 303–312.

    Google Scholar 

  17. G.I. Taylor, Journal of the Institute of Metals 62 (1938) 307–324.

    Google Scholar 

  18. W.B. Lee and K.C. Chan, Scripta Metallurgica and Materialia 24 (1990) 997–1002.

    Google Scholar 

  19. W.B. Lee and K.C. Chan, Acta Metallurgica and Materialia 39 (1991) 411–417.

    Google Scholar 

  20. J.F.W. Bishop and R. Hill, Philosophy Magazine 42 (1951) 414–427.

    Google Scholar 

  21. J.F.W. Bishop and R. Hill, Philosophy Magazine 42 (1951) 1298–1307.

    Google Scholar 

  22. J.H. Driver, A. Skalli A. and M. Winterberger. Mem. Scientific Revue Metallurgy 80 (1983) 241.

    Google Scholar 

  23. P. Van Houtte and E. Aernoudt, Zhurnal Metallk 66 (1975) 202–209.

    Google Scholar 

  24. U.F. Kocks, Constitutive Equations in Plasticity, A.S. Argon (ed.), MIT Press, Cambridge (1975) 81–116.

    Google Scholar 

  25. H. Honneff and H. Mecking, in Textures of Materials, G. Kottstein and K. Lucke (eds.), Springer, Berlin (1978) 265–275.

    Google Scholar 

  26. E. Aernoudt, P. Van Houtte and J. Gil Sevillano, Proceedings 4 International Conference on the Strength of Metals and Alloys 11 (1976) 110.

    Google Scholar 

  27. B.J. Duggan, M. Hatherly, W.B. Hutchinson and P.T. Wakefield, Metal Science 12 (1978) 343–350.

    Google Scholar 

  28. L.S. Costin, E.E. Crisman, R.H. Hawley and J. Duffy, in Proceedings of the Second Conference on the Behavior of Materials at High Rate of Strain (Oxford), (1979) 90–100.

  29. Y.W. Chang and R.S. Asaro, Acta Metallurgica 29 (1981) 241–257.

    Google Scholar 

  30. J.W. Hutchinson, in Proceedings of the Workshop on Flow Localization (1981) 46–47.

  31. C.J. Beevers and R.W. Honeycombe, Acta Metallurgica 9 (1961) 513–524.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Manufacturing Engineering, Hong Kong Polytechnic, Hung Hom, Hong Kong

    W. B. Lee & K. C. Chan

Authors
  1. W. B. Lee
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. K. C. Chan
    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

Lee, W.B., Chan, K.C. A microplasticity analysis of shear band cracks in rolled 2024 aluminium alloy. Int J Fract 52, 207–221 (1991). https://doi.org/10.1007/BF00034905

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00034905

Keywords

Search

Navigation