| People | Locations | Statistics |
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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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Feaugas, Xavier
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2024Micro-mechanisms and modelling of the corrosion fatigue behaviour of a maraging steelcitations
- 2023Understanding the mechanisms of intergranular corrosion in 2024 Al alloy at the polycrystal scalecitations
- 2023A multi-method approach to the study of hydrogen trapping in a maraging stainless steel: the impact of B2-NiAl precipitates and austenitecitations
- 201917 - Corrosion and Hydrogen Fatigue at Different Scalescitations
- 2018A cyclic slip irreversibility based model for fatigue crack initiation of nickel base alloys
- 2016In situ monitoring of organic coating swelling by dynamic mechanical analysis and scanning electrochemical microscopycitations
- 2015Dislocation mechanisms in a zirconium alloy in the high-temperature regime: An in situ TEM investigationcitations
- 2015Dislocation mechanisms in a zirconium alloy in the high-temperature regime: An in situ TEM investigationcitations
- 2015Impact of cementite tortuosity on hydrogen diffusion in pearlitic steels
- 2014Thermal isocreep curves obtained during multi-axial creep tests on recrystallized Zircaloy-4 and M5™ alloycitations
- 2007The Effects of Grain Size on Dislocations organization and Internal Stresses developed under Tensile Loading in f.c.c. metalscitations
Places of action
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article
Dislocation mechanisms in a zirconium alloy in the high-temperature regime: An in situ TEM investigation
Abstract
cited By 7 ; International audience ; Dislocation mechanisms responsible for the high-temperature mechanical properties of a Zr alloy have been investigated using in situ straining experiments between 250 °C and 450 °C. At 250 °C and 300 °C, the results show a steady and homogeneous dislocation motion in prismatic planes, with little cross-slip in the pyramidal and/or basal planes. At 350 °C, the kinetics of mobile dislocations becomes very jerky and inhomogeneous, in agreement with a dynamic strain aging mechanism. Above this temperature, the motion is again steady and homogeneous. Extensive cross-slip forms super-jogs which are efficient pinning points against the glide motion. These super-jogs move by glide along the Burgers vector direction, never by climb. The glide velocity between super-jogs is linear as a function of the total driving stress (applied stress minus line-tension stress due to dislocation curvature), in agreement with the solute dragging mechanism. The origin of the stress-strain rate dependence with an exponent larger than unity is then discussed. © 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.