RT Conference Proceedings
T1 Microstructure and tensile properties of oxide dispersion strengthened Fe–14Cr– 0.3Y₂O₃ and Fe–14Cr–2W–0.3Ti–0.3Y₂O₃
A1 Auger, María A.
A1 Castro Bernal, María Vanessa de
A1 Leguey Galán, Teresa
A1 Monge Alcazar, Miguel Ángel
A1 Muñoz Castellanos, Ángel
A1 Pareja Pareja, Ramiro
AB Two ODS ferritic steels with nominal compositions (wt.%): Fe–14Cr–0.3Y2O3  and Fe–14Cr–2W–0.3Ti–0.3Y2O3  have been produced by mechanical alloying and consolidation by hot isostatic pressing. The microstructure and tensile properties of these materials after being forged and heattreated at 1123 K have been investigated to clarify the interrelation between composition, microstructure and mechanical properties. The second phase precipitates in these alloys have been analyzed by high angle annular dark field imaging in scanning TEM mode and electron diffraction. Fe–14Cr–2W–0.3Ti–0.3Y2O3 exhibits a duplex microstructure consisting of large recrystallized grains, as large as 1.5 μm, and unrecovered regions containing submicronequiaxed grains. In addition, three types of secondary phase particles have been found: large M₂₃C₆ particles containing W and Cr, (Cr + Ti) rich sphericalparticles with diameters between 50 and 500 nm, and fine (Y + Ti) oxide particles with sizes below 30 nm. In contrast, Fe14CrY shows a uniform structureof equiaxed grains, with sizes in the range 0.5 3 μm, containing a fine disper sion of Y oxide particles (<30 nm) homogeneously distributed inside thegrains, as well as large carbide and oxide particles. Tensile tests performed over the temperature range 273 973 K have revealed that the alloy containingW and Ti has lower yield and tensile strengths than Fe–14Cr–0.3Y2O3 at tempera tures up to 773 K, but the opposite appears to occur beyond this temperature.
PB Elsevier
SN 0022-3115
YR 2011
FD 2011-10
LK https://hdl.handle.net/10016/19719
UL https://hdl.handle.net/10016/19719
LA eng
NO Proocedings of: 15th International Conference on Fusion Reactor Materials (ICFRM15). Charleston, South Carolina (United States of America), 16-22 october, 2011
NO This investigation was supported by the Spanish Ministry of Science and Innovation (Project No. ENE 2008 06403 C06 04 andJuan de la Cierva program), the Comunidad de Madrid throughthe program ESTRUMAT CM (Grant S0505/MAT/0077), and theEuropean Commission through the European Fusion DevelopmentAgreement (Contract No. 09 240), the IP3 FP6 ESTEEM project(Contract No. 026019) and the Fusion Energy Materials Science(FEMaS) FP7 coordination action.
DS e-Archivo
RD 30 jun. 2024