RT Conference Proceedings
T1 Microstructural characterization of Y₂O₃ ODS-Fe-Cr model alloys
A1 Castro Bernal, María Vanessa de
A1 Leguey Galán, Teresa
A1 Muñoz Castellanos, Ángel
A1 Monge Alcazar, Miguel Ángel
A1 Pareja Pareja, Ramiro
A1 Marquis, E.A.
A1 Lozano-Pérez, S.
A1 Jenkins, M. L.
AB Two Fe-12 wt% Cr alloys, one containing 0.4 wt% Y₂O₃ and the other Y₂O₃ free, have been produced by mechanical alloying followed by hot isostatic pressing. These oxide dispersion strengthened and reference alloys were characterized both in the as-HIPed state and after tempering by transmission electron microscopy and atom-probe tomography. The as-HIPed alloys exhibited the characteristic microstructure of lath martensite and contained a high density of dislocations. Small voids with sizes <10 nm were also observed. Both alloys also contained M₃C and M₂₃C₆ carbides (M = Cr, Fe) probably as a result of C ingress during milling. After tempering at 1023 K for 4 h the microstructures had partially recovered. In the recovered regions, martensite laths were replaced by equiaxed grains in which M₂₃C₆ carbides decorated the grain boundaries. In the ODS alloy nanoparticles containing Y were commonly observed within grains, although they were also present at grain boundaries and adjacent to large carbides.
PB Elsevier
SN 0022-3115
YR 2007
FD 2007-12
LK https://hdl.handle.net/10016/19720
UL https://hdl.handle.net/10016/19720
LA eng
NO Proceedings of the:  Thirteenth International Conference on Fusion Reactor Materials. Nice (France), 10-14/12/2007.
NO This research has been supported by FP6 Euratom Research and Training Programme on Nuclear Energy. The financial support from the Comunidad de Madrid, through the program ESTRUMAT CM,Grant S 0505/MAT/0077.
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RD 30 jun. 2024