Abstract
Various methods have been used to reveal the voids arising from ductile fracture processes in a structural steel and the techniques compared. Using a series of the interrupted smooth bar tensile tests specimens were stopped at different plastic strains and nucleation was investigated. The material tested was a C-Mn structural steel with low sulphur content. The critical nucleation strain and the relative void volume at the critical nucleation strain were determined.
Résumé
On a fait appel à diverse sméthodes pour faire apparaitre les lacunes générées par un processus de rupture ductile dans un acier de construction, et les techniques utilisées ont été comparées.
En procédant à une série d'essais de traction interrompus sur un barreau lisse, on a pu isoler différents spécimens de déformation plastique et étudier les nucléations de lacunes y associées. Le matériau soumis à l'essai était un acier de construction au C-Mn à faible teneur and S. On a pu déterminer une dilatation critique de nucléation, ainsi que le volume relatif de lacunes créées à la dilatation critique de nucléation.
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Shi, Y.W., Barnby, J.T. Void nucleation during tensile deformation of a C-Mn structural steel. Int J Fract 25, 143–151 (1984). https://doi.org/10.1007/BF01141557
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DOI: https://doi.org/10.1007/BF01141557