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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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Vaajoki, Antti
VTT Technical Research Centre of Finland
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2024Suppression of helium migration in arc-melted and 3D-printed CoCrFeMnNi high entropy alloycitations
- 2024Suppression of helium migration in arc-melted and 3D-printed CoCrFeMnNi high entropy alloycitations
- 2021Additive manufacturing in nuclear power plants (AM-NPP)
- 2019Wear of additively manufactured tool steel in contact with aluminium alloycitations
- 2018The Effect of L-PBF Process Parameters on Surface Quality and Mechanical Properties of H13 Hot Work Tool Steel
- 2018Design and Verification of a Wireless Readout System for Integrated Motor Axle Condition Monitoringcitations
- 2018Tribological properties of thin films made by atomic layer deposition sliding against siliconcitations
- 2016Static friction measurements on steel against uncoated and coated cast iron
- 2016Microscratch testing method for systematic evaluation of the adhesion of atomic layer deposited thin films on siliconcitations
- 2015Mesoscale modelling of short crack initiation in metallic selective laser melting microstructures
- 2015Comparison of laboratory rolling-sliding wear tests with in-service wear of nodular cast iron rollers against wire ropescitations
- 2014Tribological Testing and Modeling of Elastomeric Materials
- 2013Tribological behaviour of carbon thin films against bearing steel under continuous sliding in hydrogen environment
- 2013Microstructure and tribological properties of pulsed electric current sintered alumina-zirconia nanocomposites with different solid lubricantscitations
- 2013Tribological testing and modeling of elastomeric materials
- 2011Pulsed electric current sintering of the Al2O3-15wt-%ZrO2 nanocomposites with 3wt-% of different solid lubricantscitations
Places of action
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article
Suppression of helium migration in arc-melted and 3D-printed CoCrFeMnNi high entropy alloy
Abstract
We compare the evolution and migration of helium cavities in 3D-printed and arc-melted CoCrFeMnNi high entropy alloys (HEAs), and 304 stainless steel (SS), using transmission electron microscopy (TEM). The materials are subjected to Ni and He sequential implantation as well as subsequent thermal annealing. After irradiation at room temperature, all samples initially display similar He cavity sizes. Annealing up to 673 K has a minimal impact on cavity size. However, annealing at 873 K leads to significant cavity growth. Both HEA materials exhibit larger average cavity sizes compared to 304 SS, while a higher proportion of small cavities is found in the 304 SS. This indicates that Ostwald Ripening is more prevalent in 304 SS, confirmed by in-situ thermal annealing in TEM. Depth distribution analysis reveals distinct cavity belts after annealing: from the narrowest in 3D printed HEA to the broadest belts in 304 SS. These results indicate that the He concentration at the peak of irradiation damage decreases in the same order. We suggest that the long-range migration of He atoms is limited in both the Cantor and 3D-printed Cantor HEAs, potentially due to the complex diffusion paths of the He atoms. ; Peer reviewed