Nanostructure evolution in ODS steels under ion irradiation

Рогожкин, С. В.; Bogachev, A. A.; Korchuganova, O. A.; Никитин, А. А.; Орлов, Н. Н.; Aleev, A. A.; Залужный, А. Г.; Kozodaev, M. A.; Kulevoy, T. V.; Chalykh, B. B.; Lindau, R.; Hoffmann, J.; Möslang, A.; Vladimirov, P.; Klimenkov, M.; Heilmaier, Martin; Wagner, Julia; Seils, Sascha

doi:10.1016/j.nme.2016.06.011

Cited by 52 publications

(18 citation statements)

References 15 publications

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“…In ODS Eurofer irradiated with heavy ions at low temperatures (RT, 300 °C and 400 °C), dislocation loops were observed [23,29]. TEM study also showed an increase in density of small (< 5 nm) oxide particles [23]. The yield stress of ODS Eurofer under neutron irradiation at 300 °C increases by ~ 10% per 1 dpa up to a few dpa [18,19], and after irradiation to 40 dpa it increases by 116% [9].…”

Section: Apt Study Of Irradiated Samples Of Ods Eurofermentioning

confidence: 92%

“…It was APT study that revealed considerable changes in nanoclusters in the neutron irradiated steel to 32 dpa at 330 °C. In ODS Eurofer irradiated with heavy ions at low temperatures (RT, 300 °C and 400 °C), dislocation loops were observed [23,29]. TEM study also showed an increase in density of small (< 5 nm) oxide particles [23].…”

Section: Apt Study Of Irradiated Samples Of Ods Eurofermentioning

confidence: 93%

“…The test temperatures of irradiated Eurofer 97 and ODS Eurofer were 200 °C and 330 °C respectively. Nanoscale reconstruction of ferritic-martensitic steels under heavy ion irradiation was also studied with heavy ion irradiation [22,23]. Atom probe specimens with an apex radius of ~ 50 nm were used for the irradiation experiment.…”

Section: Methodsmentioning

confidence: 99%

“…Atom probe specimens with an apex radius of ~ 50 nm were used for the irradiation experiment. The scheme of the irradiation was described in [23,24]. The irradiation was performed using a pulsed ion beam from the Metal Vapor Vacuum Arc (MEVVA) ion source (IS) with an energy of 75 keV/Z (where Z is the ion charge), the pulse duration of 450 µs, and the pulse repetition rate of less than 0.25 Hz under a vacuum of greater than 2 × 10 -6 mbar [25].…”

Section: Methodsmentioning

confidence: 99%

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Evolution of microstructure in advanced ferritic-martensitic steels under irradiation: the origin of low temperature radiation embrittlement

et al. 2016

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Advanced reduced activation ferritic/martensitic steels and oxide dispersion-strengthened steels exhibit significant radiation embrittlement under low temperature neutron irradiation. In this study we focused on atom probe tomography (APT) of Eurofer97 and ODS Eurofer steels irradiated with neutrons and heavy ions at low temperatures. Previous TEM studies revealed dislocation loops in the neutron-irradiated f\m steels. At the same time, our APT showed early stages of solid solution decomposition. High density (10 24 m -3 ) of ~3-5 nm clusters enriched in chromium, manganese, and silicon atoms were found in Eurofer 97 irradiated in BOR-60 reactor to 32 dpa at 332°C. In this steel irradiated with Fe ions up to the dose of 24 dpa, pair correlation functions calculated using APT data showed the presence of Cr-enriched pre-phases.APT study of ODS Eurofer found a significant change in the nanocluster composition after neutron irradiation to 32 dpa at 330 °C and an increase in cluster number density. APT of ODS steels irradiated with Fe ions at low temperatures revealed similar changes in nanoclusters.These results suggest that irradiation-induced nucleation and evolution of very small precipitates may be the origin of low temperature radiation embrittlement of f\m steels.

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Section: Apt Study Of Irradiated Samples Of Ods Eurofermentioning

confidence: 92%

Section: Apt Study Of Irradiated Samples Of Ods Eurofermentioning

confidence: 93%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Evolution of microstructure in advanced ferritic-martensitic steels under irradiation: the origin of low temperature radiation embrittlement

et al. 2016

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“…Similarly, the data in literature also presents contradictory results with respect to irradiation temperature. Ti ratio has been observed to both increase in some studies [8,9,59,67,88,104,114,116], and decrease in others [81,89,102,116,123,124], while the (T+Ti):O ratio is typically observed to remain the same [8,9,116]. A summary of literature data providing evolution information for these two ratios is provided in Figure 2 Cr enrichment at the interface of nanoclusters [107,112], or depletion of Al from nanoclusters [88,104].…”

Section: Cluster Evolution Experiments On Ods Alloysmentioning

confidence: 95%

The Mechanism of Radiation-Induced Nanocluster Evolution in Oxide Dispersion Strengthened and Ferritic-Martensitic Alloys

Swenson¹

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Using Applications and Tools to Visualize ab initio Calculations Performed in VASP

Gopejenko

2018

Lecture Notes in Computer Science

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Nanostructure evolution in ODS steels under ion irradiation

Cited by 52 publications

References 15 publications

Evolution of microstructure in advanced ferritic-martensitic steels under irradiation: the origin of low temperature radiation embrittlement

Evolution of microstructure in advanced ferritic-martensitic steels under irradiation: the origin of low temperature radiation embrittlement

The Mechanism of Radiation-Induced Nanocluster Evolution in Oxide Dispersion Strengthened and Ferritic-Martensitic Alloys

Using Applications and Tools to Visualize ab initio Calculations Performed in VASP

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