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Large Deformation and Mechanical Effects of Damage in Aged Duplex Stainless Steel

Léa Le Joncour 1 Benoît Panicaud 1 Andrzej Baczmanski 2 Manuel Francois 1 Chedly Braham 3 Anna Maria Paradowska 4
1 LASMIS - Laboratoire des Systèmes Mécaniques et d'Ingénierie Simultanée
ICD - Institut Charles Delaunay
2 AGH UST - AGH University of Science and Technology [Krakow, PL]
3 LIM - Laboratoire d'Ingénierie des Matériaux
4 RAL - STFC Rutherford Appleton Laboratory
Abstract : The lattice strains in large tensile deformations, up to the fracture of the sample were measured using neutron TOF method. For the first time, the range of large deformation was studied measuring lattice strain in the deformation neck and using special correction for macrostress value. It was found that during large plastic deformation the lattice stresses arise almost linearly with the macrostress value. The relaxation of elastic strains in some groups of ferritic grains (corresponding to reflections 211 and 200) can be connected with initiation of damage process in the ferritic phase.
Keywords : Damage Duplex Stainless Steel Neutron Diffraction Plasticity Residual Stress Self-Consistent Modeling
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Submitted on : Thursday, September 5, 2019 - 9:37:47 AM
Last modification on : Wednesday, September 15, 2021 - 3:09:06 PM

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Léa Le Joncour, Benoît Panicaud, Andrzej Baczmanski, Manuel Francois, Chedly Braham, et al.. Large Deformation and Mechanical Effects of Damage in Aged Duplex Stainless Steel. Materials Science Forum, Trans Tech Publications Inc., 2010, 652, pp.155-160. ⟨10.4028/www.scientific.net/MSF.652.155⟩. ⟨hal-02279160⟩

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