On the mechanisms of ductile failure in high-strength steels subjected to multi-axial stress-states

https://doi.org/10.1016/0022-5096(76)90024-7Get rights and content

Abstract

The strain required to initiate ductile failure in three low-alloy, quenched and tempered steels has been determined in multi-axial stress-states. The ductility was found to depend markedly both on the orientation of the stress system with respect to the rolling direction and on the tri-axiality of the stress-state. In some cases, ductile failure occurred at plastic strains which were only a few times the yield strain.

Metallographic studies have been used to compare the size, shape and orientation of the holes which cause failure initiation with the isotropic continuum analysis of F.A. Mc Clintock (1968). The application of ductile-fracture models to directional steels is discussed with particular reference to the effects of directionality and stress-state on the condition for flow localization to occur between holes.

References (15)

  • J.R. Rice et al.

    J. Mech. Phys. Solids

    (1969)
  • R.O. Ritchie et al.

    J. Mech. Phys. Solids

    (1973)
  • J. Orr et al.

    Eng. Fract. Mech.

    (1974)
  • M.F. Ashby

    Phil. Mag.

    (1966)
  • C.A. Berg
  • C.A. Berg
  • C.A. Berg

    J. Res. Nat. Bur. Stand.

    (1972)
There are more references available in the full text version of this article.

Cited by (0)

View full text