Transmission electron microscopy (TEM) and small-angle neutron scattering (SANS) were used to characterize the microstructure of two variants of oxide-dispersion strengthened (ODS) Eurofer-97 steel (9% CrWVTa), that is being developed for future fusion reactors. More specifically the Y2O 3 particle size distributions obtained with different Y 2O3 contents have been characterized, since the mechanical properties are strongly correlated with such features. The SANS measurements have been carried out by the D22 instrument at the High Flux Reactor of the Institut Laue-Langevin, Grenoble. There is a good agreement between TEM histograms and SANS distributions of the Y2O3 particles. Furthermore, relevant and unique information is provided by the SANS measurements that reveals particles of size smaller than 1 nm approximately.
SANS and TEM study of y2O3 particle distributions in oxide-dispersion strengthened EUROFER martensitic steel for fusion reactors
Valli, M.
2004-07-01
Abstract
Transmission electron microscopy (TEM) and small-angle neutron scattering (SANS) were used to characterize the microstructure of two variants of oxide-dispersion strengthened (ODS) Eurofer-97 steel (9% CrWVTa), that is being developed for future fusion reactors. More specifically the Y2O 3 particle size distributions obtained with different Y 2O3 contents have been characterized, since the mechanical properties are strongly correlated with such features. The SANS measurements have been carried out by the D22 instrument at the High Flux Reactor of the Institut Laue-Langevin, Grenoble. There is a good agreement between TEM histograms and SANS distributions of the Y2O3 particles. Furthermore, relevant and unique information is provided by the SANS measurements that reveals particles of size smaller than 1 nm approximately.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
