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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Prioul, Claude
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2012Experimental and numerical study of dynamic strain ageing and its relation to ductile fracture of a C-Mn steelcitations
- 2009Mechanical behavior and crack tip plasticity of a strain aging sensitive steelcitations
- 2006Cold drawn steel wires—processing, residual stresses and ductility — Part II: Synchrotron and neutron diffraction.
- 2006Measurement of sensitivity to dynamic strain aging in C–Mn steels by internal friction experiments.citations
- 2006Cold drawn steel wires—processing, residual stresses and ductility — Part I: metallography and finite element analyses.
- 2005Plastic Deformation of Irradiated Zirconium Alloys: TEM Investigations and Micro-Mechanical Modelingcitations
- 2005Finite element simulations of dynamic strain ageing effects at V-notches and crack tips.citations
- 2004A statistical TEM investigation of dislocation channeling mechanism in neutron irradiated zirconium alloys.
- 2002Statistical aspects of brittle fracture in low-alloyed steelscitations
Places of action
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article
A statistical TEM investigation of dislocation channeling mechanism in neutron irradiated zirconium alloys.
Abstract
Plastic deformation in irradiated zirconium alloys occurs in a very heterogeneous manner at the grain scale by the clearing up of radiation-induced prismatic loops by gliding dislocations and the channeling of these dislocations inside narrow bands of the grain. A statistical TEM investigation of this mechanism has been performed on neutron irradiated recrystallized Zr alloys tested at 350 degreesC. Due to the strong anisotropy of plastic deformation, different loading conditions have been investigated. It is shown that for transverse tensile tests and closed end burst tests, only basal channels are observed, whereas for axial tensile tests, prismatic and pyramidal channels are observed. This phenomenon can be understood in terms of texture and interactions between dislocations and irradiation induced loops. From Schmid factor calculations, we have also been able to prove that irradiation leads to a higher increase of critical resolved shear stresses for prismatic and pyramidal slip systems than for basal slip system.