by Marcelo Roldán, Pilar Fernández, Joaquín Rams, Fernando José Sánchez and Adrián Gómez-Herrero
Abstract:
The effect of post-helium irradiation annealing on bubbles and nanoindentation hardness of two reduced activation ferritic martensitic steels for nuclear fusion applications (EUROFER97 and EU-ODS EUROFER) has been studied. Helium-irradiated EUROFER97 and EU-ODS EUROFER were annealed at 450 °C for 100 h in an argon atmosphere. The samples were tested by nanoindentation and studied by transmission electron microscopy extracting some focused ion beam lamellae containing the whole implanted zone (≈50 µm). A substantial increment in nanoindentation hardness was measured in the area with higher helium content, which was larger in the case of EUROFER97 than in EU-ODS EUROFER. In terms of microstructure defects, while EU-ODS EUROFER showed larger helium bubbles, EUROFER97 experienced the formation of a great population density of them, which means that the mechanism that condition the evolution of cavities for these two materials are different and completely dependent on the microstructure.
Reference:
Marcelo Roldán, Pilar Fernández, Joaquín Rams, Fernando José Sánchez and Adrián Gómez-Herrero, “Nanoindentation and TEM to Study the Cavity Fate after Post-Irradiation Annealing of He Implanted EUROFER97 and EU-ODS EUROFER”, Micromachines, vol. 9, no. 12, pp. 633.
Bibtex Entry:
@article{roldan_nanoindentation_2018,
title = {Nanoindentation and {TEM} to {Study} the {Cavity} {Fate} after {Post}-{Irradiation} {Annealing} of {He} {Implanted} {EUROFER97} and {EU}-{ODS} {EUROFER}},
volume = {9},
copyright = {http://creativecommons.org/licenses/by/3.0/},
url = {https://www.mdpi.com/2072-666X/9/12/633},
doi = {10.3390/mi9120633},
abstract = {The effect of post-helium irradiation annealing on bubbles and nanoindentation hardness of two reduced activation ferritic martensitic steels for nuclear fusion applications (EUROFER97 and EU-ODS EUROFER) has been studied. Helium-irradiated EUROFER97 and EU-ODS EUROFER were annealed at 450 °C for 100 h in an argon atmosphere. The samples were tested by nanoindentation and studied by transmission electron microscopy extracting some focused ion beam lamellae containing the whole implanted zone (≈50 µm). A substantial increment in nanoindentation hardness was measured in the area with higher helium content, which was larger in the case of EUROFER97 than in EU-ODS EUROFER. In terms of microstructure defects, while EU-ODS EUROFER showed larger helium bubbles, EUROFER97 experienced the formation of a great population density of them, which means that the mechanism that condition the evolution of cavities for these two materials are different and completely dependent on the microstructure.},
language = {en},
number = {12},
urldate = {2020-03-31},
journal = {Micromachines},
author = {Roldán, Marcelo and Fernández, Pilar and Rams, Joaquín and Sánchez, Fernando José and Gómez-Herrero, Adrián},
month = dec,
year = {2018},
keywords = {helium irradiation, irradiation hardening, nanoindentation, nuclear fusion structural materials, reduced activation ferritic martensitic (RAFM) steels},
pages = {633},
file = {Full Text PDF:E:\Usuarios\Administrator\Zotero\storage\7T33QV26\Roldán et al. - 2018 - Nanoindentation and TEM to Study the Cavity Fate a.pdf:application/pdf;Snapshot:E:\Usuarios\Administrator\Zotero\storage\VNLB467H\htm.html:text/html},
}