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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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Veleva, L.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (6/6 displayed)
- 2022AM60-AlN Nanocomposite and AM60 Alloy Corrosion Activity in Simulated Marine-Coastal Ambiencecitations
- 2021Corrosion Behavior of Extruded AM60-AlN Metal Matrix Nanocomposite and AM60 Alloy Exposed to Simulated Acid Rain Environmentcitations
- 2013Recent progress in research on tungsten materials for nuclear fusion applications in Europecitations
- 2013Recent progress in research on tungsten materials for nuclear fusion applications in Europecitations
- 2011Processing and characterization of a W-2Y material for fusion power reactorscitations
- 2009Sintering and characterization of W-Y and W-Y 2 O 3 materialscitations
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article
Processing and characterization of a W-2Y material for fusion power reactors
Abstract
A W-2Y material has been produced by powder metallurgy techniques including mechanical alloying of W and Y elemental powders in an argon atmosphere, followed by hot isostatic pressing of the milled powder at 1320 °C under a pressure of 200 MPa for 2 h. It was found that the mechanical alloying time should not exceed 40 h in order to achieve a homogeneous distribution of small powder particles and to limit air contamination and carbon/WC contamination by the jar and ball materials. The density of the ingots was found to be about 97% the theoretical one. It was observed that the microstructure of the compacted material is composed of grains having a bimodal size distribution, with mean sizes around 50 and 150 nm. In addition, the material contains an inhomogeneous distribution of oxide particles with a mean size ranging from 2 to 20 nm. In situ TEM chemical analyses revealed that the entire content of yttrium reacted with oxygen to form nanometric oxides whose composition corresponds to Y 2O3. Charpy impact tests revealed that the material is brittle at the high temperature of about 1000 °C. Tensile tests confirmed that the material is brittle at 1000 °C but ductile at 1300 °C, indicating that the ductile-to-brittle transition temperature should lie between 1100 and 1200 °C. © 2011 EURATOM associated institution EPFL CRPP.