by M. Roldán, P. Fernández, J. Rams, D. Jiménez-Rey, E. Materna-Morris and M. Klimenkov
Abstract:
Helium effects on EU-ODS EUROFER were studied by means of nanoindentation and TEM. The results were compared with those of EUROFER97. Both steels were implanted in a stair-like profile configuration using energies from 2MeV (maximum He content ∼750appm He) to 15MeV (minimum He ∼350appm He) at room temperature. The nanoindentation tests on He implanted samples showed a hardness increase that depended on the He concentration. The maximum hardness increase observed at 5mN was 21% in EU-ODS EUROFER and 41% in EUROFER97; it corresponded with the zone with the highest He concentration which was around 750appm, according to MARLOWE simulation. In addition, FIB lamellae were prepared from EUROFER97 and EU-ODS EUROFER containing the aforementioned zones with maximum (750appm) and minimum (300appm) He. TEM investigations carried out showed small and homogeneously distributed He nanobubbles on both alloys in the zone corresponding with maximum He content. These microstructural features seem to be the cause of the hardness increase measured by nanoindentation.
Reference:
M. Roldán, P. Fernández, J. Rams, D. Jiménez-Rey, E. Materna-Morris and M. Klimenkov, “Comparative study of helium effects on EU-ODS EUROFER and EUROFER97 by nanoindentation and TEM”, Journal of Nuclear Materials, vol. 460, no. Supplement C, pp. 226–234.
Bibtex Entry:
@article{roldan_comparative_2015,
title = {Comparative study of helium effects on {EU}-{ODS} {EUROFER} and {EUROFER97} by nanoindentation and {TEM}},
volume = {460},
issn = {0022-3115},
url = {http://www.sciencedirect.com/science/article/pii/S0022311515001208},
doi = {10.1016/j.jnucmat.2015.02.025},
abstract = {Helium effects on EU-ODS EUROFER were studied by means of nanoindentation and TEM. The results were compared with those of EUROFER97. Both steels were implanted in a stair-like profile configuration using energies from 2MeV (maximum He content ∼750appm He) to 15MeV (minimum He ∼350appm He) at room temperature. The nanoindentation tests on He implanted samples showed a hardness increase that depended on the He concentration. The maximum hardness increase observed at 5mN was 21% in EU-ODS EUROFER and 41% in EUROFER97; it corresponded with the zone with the highest He concentration which was around 750appm, according to MARLOWE simulation. In addition, FIB lamellae were prepared from EUROFER97 and EU-ODS EUROFER containing the aforementioned zones with maximum (750appm) and minimum (300appm) He. TEM investigations carried out showed small and homogeneously distributed He nanobubbles on both alloys in the zone corresponding with maximum He content. These microstructural features seem to be the cause of the hardness increase measured by nanoindentation.},
number = {Supplement C},
urldate = {2017-10-24},
journal = {Journal of Nuclear Materials},
author = {Roldán, M. and Fernández, P. and Rams, J. and Jiménez-Rey, D. and Materna-Morris, E. and Klimenkov, M.},
month = may,
year = {2015},
pages = {226--234},
file = {ScienceDirect Full Text PDF:E:\cmam_papers\files\1404\Roldán et al. - 2015 - Comparative study of helium effects on EU-ODS EURO.pdf:application/pdf;ScienceDirect Full Text PDF:E:\Usuarios\Administrator\Zotero\storage\AXACQTBD\Roldán et al. - 2015 - Comparative study of helium effects on EU-ODS EURO.pdf:application/pdf;ScienceDirect Snapshot:E:\cmam_papers\files\1403\S0022311515001208.html:text/html;ScienceDirect Snapshot:E:\Usuarios\Administrator\Zotero\storage\XNGNNZVU\S0022311515001208.html:text/html},
}