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Portevin-Le Chatelier (PLC) instabilities and slant fracture in C-Mn steel round tensile specimens

Huaidong Wang 1, 2 Clotilde Berdin 1 Matthieu Mazière 3 Samuel Forest 3 Claude Prioul 1 Aurore Parrot 2 Patrick Le Delliou 4
1 MSSMat - Laboratoire de mécanique des sols, structures et matériaux
2 EDF - EDF
3 MAT - Centre des Matériaux
4 EDF R&D - EDF R&D
Abstract : Round tensile specimens of a C-Mn steel were tested at different strain rates and temperatures. Some of the samples tested in the Portevin-Le Chatelier (PLC) domain exhibit slant fracture surfaces. Spherical dimples were evidenced all over the slant fracture surfaces. Numerical simulations showed that stress triaxiality increases around PLC bands and that slant fracture occurs within a PLC band. In a round specimen, this band is plane and inclined, whereas some numerical results predict conical bands.
Keywords : Portevin-Le Chatelier instabilities Fracture surfaces Numerical modeling Band orientation
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https://hal-mines-paristech.archives-ouvertes.fr/hal-00579436
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Submitted on : Wednesday, March 23, 2011 - 6:20:42 PM
Last modification on : Thursday, September 24, 2020 - 6:30:07 PM

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Huaidong Wang, Clotilde Berdin, Matthieu Mazière, Samuel Forest, Claude Prioul, et al.. Portevin-Le Chatelier (PLC) instabilities and slant fracture in C-Mn steel round tensile specimens. Scripta Materialia, Elsevier, 2011, 64, pp.430-433. ⟨10.1016/j.scriptamat.2010.11.005⟩. ⟨hal-00579436⟩

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