High-temperature Embrittlement of Stainless Steel irradiated in Fast Fluxes

Fraser, A.S.; Birss, I.R.; Cawthorne, C.

doi:10.1038/211291a0

Cited by 17 publications

(3 citation statements)

References 6 publications

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“…vacancies and interstitials56. These primary defects govern not only material microstructural changes, such as the formation of dislocation loops and voids789, but also material mechanical property changes10, for example embrittlement11, creep12 and hardening13. Although simulation studies have been performed for decades, reports of microstructural changes caused by the simultaneous presence of SVs and FPs are limited, except under ion-electron dual-beam irradiation14.…”

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confidence: 99%

The Irradiation Effect of a Simultaneous Laser and Electron Dual-beam on Void Formation

Yang

Watanabe

Kato

2013

Sci Rep

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Randomly distributed lattice point defects such as supersaturated vacancies (SVs) and Frenkel-pairs (FPs, an interstitial and a vacancy) can be simultaneously introduced into the crystal by energetic beam irradiation in outer space and/or nuclear reactors, but their behavior has not been fully understood. Using a high-voltage electron microscope equipped with a laser (laser-HVEM), we show the striking effects of simultaneous laser-electron (photon-electron) dual-beam irradiation on void formation. Our results reveal that during laser-electron sequential irradiation, pre-laser irradiation enhanced void nucleation and subsequent electron irradiation enhanced void growth. However, the laser-electron dual-beam irradiation was analyzed to depress void swelling remarkably because the recombination of SVs and interstitials was enhanced. The results provide insight into the mechanism underlying the dual-beam radiation-induced depression of void swelling in solids.

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confidence: 99%

The Irradiation Effect of a Simultaneous Laser and Electron Dual-beam on Void Formation

Yang

Watanabe

Kato

2013

Sci Rep

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“…This phenomenon could also indicate an ability of the UFG steel to resist hightemperature radiation embrittlement typical to conventional CrNi steels. 67) Further investigations in the field are vitally needed to clarify uncovered gaps in exploring radiation tolerance issues concerning UFG and nanostructured materials, the effect of irradiation parameters (type, dose, temperature); the sink efficiency of different boundaries; the effect of defect distribution, precipitation and solute segregation in alloys with different chemical composition; different corrosion behaviour; and so on. On this basis, many additional ways to improve radiation tolerance of UFG materials could be found.…”

Section: Behaviour Of Ufg Materials Produced By Spd In the Conditions...mentioning

confidence: 99%

Radiation Tolerance of Ultrafine-Grained Materials Fabricated by Severe Plastic Deformation

2019

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This paper presents a historical overview of studies on the irradiation behaviour of ultrafine-grained materials produced by severe plastic deformation (SPD), which allows fabricating bulk materials with submicron grain size and nanostructural features, essentially enhancing their strength and functional properties. The dramatically increased interface fraction also provides substantially improved microstructure tolerance and ultrafine-grained material properties for electron, proton, ion or neutron irradiation. Issues related to considering SPD metals and alloys as advanced radiation-resistant materials are discussed.

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“…This top-down approach guarantees relatively good contact between the different crystallites and avoids electrical conductivity limitations (if required). Although the solubility of He in metals (including V) is extremely low, significant concentrations of implanted He can lead to dramatic changes in microstructure and mechanical properties [34,35]. Consequently, understanding the role of He in V systems is a critical issue in the development of structural materials for nuclear energy applications.…”

Section: Introductionmentioning

confidence: 99%

Tuning surface porosity on vanadium surface by low energy He+ ion irradiation

Tripathi

Novakowski

Hassanein

2016

Applied Surface Science

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In the present study, we report on tuning the surface porosity on vanadium surfaces using highflux, low-energy He + ion irradiation as function of sample temperature. Polished, mirror-finished vanadium samples were irradiated with 100 eV He + ions at a constant ion-flux of 7.2  10 20 ions m-2 s-1 for 1 hour duration at constant sample temperatures in the wide range of 823-1173 K. Our results show that the surface porosity of V 2 O 5 (naturally oxidized vanadium porous structure, after taking out from UHV) is strongly correlated to the sample temperature and is highly tunable. In fact, the surface porosity significantly increases with reducing sample temperature and reaches up to ~87%. Optical reflectivity on these highly porous V 2 O 5 surfaces show ~0% optical reflectivity at 670 nm wavelength, which is very similar to that of "black metal". Combined with the naturally high melting point of V 2 O 5 , this very low optical reflectivity suggests potential application in solar power concentration technology. Additionally, this topdown approach guarantees relatively good contact between the different crystallites and avoids electrical conductivity limitations (if required). Since V 2 O 5 is naturally a potential photocatalytic material, the resulting sub-micron-sized cube-shaped porous structures could be used in solar water splitting for hydrogen production in energy applications.

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High-temperature Embrittlement of Stainless Steel irradiated in Fast Fluxes

Cited by 17 publications

References 6 publications

The Irradiation Effect of a Simultaneous Laser and Electron Dual-beam on Void Formation

The Irradiation Effect of a Simultaneous Laser and Electron Dual-beam on Void Formation

Radiation Tolerance of Ultrafine-Grained Materials Fabricated by Severe Plastic Deformation

Tuning surface porosity on vanadium surface by low energy He+ ion irradiation

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