Effects of heavy-ion irradiation on solute segregation to dislocations in oxide-dispersion-strengthened Eurofer 97 steel

Williams, Ceri A.; Hyde, J.M.; Smith, G.D.W.; Marquis, Emmanuelle A.

doi:10.1016/j.jnucmat.2011.02.029

Cited by 39 publications

(11 citation statements)

References 26 publications

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“…As previously discussed in Refs. [48,49] [53]. This is also consistent with the segregation of Cr and Si to vacancy dislocation lines forming a low angle grain boundary ( Fig.…”

Section: Discussionsupporting

confidence: 85%

Microstructural changes in a neutron-irradiated Fe–6 at.%Cr alloy

Bachhav

Yao

Odette

et al. 2014

Journal of Nuclear Materials

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The microstructural and chemical changes in a Fe-6 at.% Cr binary model alloy neutron irradiated to 1.82 dpa at 290 o C were investigated using atom probe tomography. After irradiation, Si and Cr are found segregated to dislocation loops, which were analyzed in terms of number density, size, and habit plane. Grain boundary chemistry was quantitatively compared between the as-received and the neutron irradiated alloys. The results are discussed in the context of equilibrium segregation, radiation-enhanced diffusion, and/or radiation induced segregation.

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“…As previously discussed in Refs. [48,49] [53]. This is also consistent with the segregation of Cr and Si to vacancy dislocation lines forming a low angle grain boundary ( Fig.…”

Section: Discussionsupporting

confidence: 85%

Microstructural changes in a neutron-irradiated Fe–6 at.%Cr alloy

Bachhav

Yao

Odette

et al. 2014

Journal of Nuclear Materials

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“…Eurofer-ODS has also been studied after irradiation, usually by tomographic atom probe (TAP), in order to obtain data on nanoparticles enriched in yttrium and oxygen [17,18]. In Eurofer-ODS (0.3wt.%Y 2 O 3 ) Williams et al [17] did not detect any variation of particle size distribution and in the particle composition after Fe ion irradiations to 2 dpa at 400 C. However, Rogozhkin et al [18,19] found an increase of the particle density after irradiation and a loss of vanadium in particles in Eurofer-ODS (0.5wt.%Y 2 O 3 ) irradiated to 32 dpa at 330 C. The same team irradiated TAP needles of Eurofer-ODS with Fe ions at room temperature to three doses: 3.2, 10.2 and 13.2 dpa [19].…”

Section: Introductionmentioning

confidence: 99%

“…In Eurofer-ODS (0.3wt.%Y 2 O 3 ) Williams et al [17] did not detect any variation of particle size distribution and in the particle composition after Fe ion irradiations to 2 dpa at 400 C. However, Rogozhkin et al [18,19] found an increase of the particle density after irradiation and a loss of vanadium in particles in Eurofer-ODS (0.5wt.%Y 2 O 3 ) irradiated to 32 dpa at 330 C. The same team irradiated TAP needles of Eurofer-ODS with Fe ions at room temperature to three doses: 3.2, 10.2 and 13.2 dpa [19]. Pre-existing particles of Y, O, N and V were still visible with the same size and density after irradiation, but there was practically no more N and V in them.…”

Section: Introductionmentioning

confidence: 99%

Microstructural characterization of Eurofer-97 and Eurofer-ODS steels before and after multi-beam ion irradiations at JANNUS Saclay facility

Brimbal

Beck

Troeber

et al. 2015

Journal of Nuclear Materials

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a b s t r a c t RAFM steels such as Eurofer-97 and Eurofer-ODS are potential structural materials for future fusion reactors. In order to study their resistance to the high energy neutrons they will be subjected to in this context, we have irradiated these materials in single-, dual-and triple-beam mode to 26 dpa at 400 C. In single-beam mode (Fe ions only), both materials resist swelling but dislocation loops form. For dual-(Fe and He ions) and triple-beam (Fe, He and H) modes, the same dislocation loop microstructure is observed as for the single-beam mode, but small cavities form, aided by the presence of gases. Despite the formation of cavities, swelling is very low for the present conditions. The influence of ODS particles on swelling is briefly discussed.

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“…RIS of Si to a dislocation loop observed by Jiao and Was[102] in the ferritic steel HCM12A irradiated by 2 MeV protons at 400 °C to a dose of 7 dpa.Following the early work of Etienne et al[87,100,101] and Radiguet et al[88], the subsequent research using APT to examine radiation damage has been highly impactful. Several studies[103,104] have directly revealed RIS at dislocations and dislocation arrays other than dislocation loops. Williams et al[103] found Mn segregation to what appears to be a dislocation network,Fig.…”

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confidence: 99%

Radiation-induced solute segregation in metallic alloys

Ardell

Bellon

2016

Current Opinion in Solid State and Materials Science

113

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The subject of radiation-induced solute segregation (RIS) in metallic alloys is reviewed. RIS manifests itself in several different ways, including diffusion to point-defect sinks (dislocations, grain boundaries, voids, etc.), which can induce precipitation in undersaturated alloys, as well as self-organization of solute clusters and precipitation in defect-free material.Diffusion in dilute and concentrated alloys is highlighted, as are theories of RIS that include new ideas on diffusion of complexes involving coupling between fluxes of point defects and of solute atoms. Many important experimental observations are presented, including up-to-date findings using atom-probe tomography, with special emphasis on solute segregation in austenitic and ferritic steels. Results from computational modeling and theory are also presented and discussed in light of experimental findings. Examples illustrating the factors affecting RIS are shown and some important outstanding issues that impact the current understanding of RIS are described and discussed.

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Effects of heavy-ion irradiation on solute segregation to dislocations in oxide-dispersion-strengthened Eurofer 97 steel

Cited by 39 publications

References 26 publications

Microstructural changes in a neutron-irradiated Fe–6 at.%Cr alloy

Microstructural changes in a neutron-irradiated Fe–6 at.%Cr alloy

Microstructural characterization of Eurofer-97 and Eurofer-ODS steels before and after multi-beam ion irradiations at JANNUS Saclay facility

Radiation-induced solute segregation in metallic alloys

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