Nanoindentation and TEM to Study the Cavity Fate after Post-Irradiation Annealing of He Implanted EUROFER97 and EU-ODS EUROFER

Impacto

Downloads

Downloads per month over past year

Roldán, Marcelo and Fernández, Pilar and Rams, Joaquín and Sánchez, Fernando and Gómez Herrero, Adrián (2018) Nanoindentation and TEM to Study the Cavity Fate after Post-Irradiation Annealing of He Implanted EUROFER97 and EU-ODS EUROFER. Micromachines, 9 (12). p. 633. ISSN 2072-666X

[thumbnail of micromachines-09-00633.pdf]
Preview
PDF
Creative Commons Attribution.

9MB

Official URL: https://doi.org/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.


Item Type:Article
Uncontrolled Keywords:nanoindentation; reduced activation ferritic martensitic (RAFM) steels; helium irradiation; irradiation hardening; nuclear fusion structural materials
Subjects:Sciences > Physics > Electronics
Sciences > Computer science > Electronics
ID Code:66539
Deposited On:05 Jul 2021 14:21
Last Modified:14 Jan 2022 12:26

Origin of downloads

Repository Staff Only: item control page