Crack formation in the 12Kh12M1BFR ferritic steel under the action of hydrogen ion flux

Bendikov, V.I.; Nikitin, A.V.; Opalev, O.A.; Ruzhitskii, V. V.; Rybalko, V.F.; Khazan, S.M.

doi:10.1007/bf02073292

Cited by 2 publications

(7 citation statements)

References 4 publications

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“…As noted in the introduction section the formation of plasmainduced blisters in non-deformed specimens is accompanied by concurrent formation of cracks [9]. Fig.…”

Section: Discussion On Mechanisms Of Blister Formationmentioning

confidence: 97%

“…[9]. In current paper we focus on the development of blisters on the surface, as a function of cold-deformation level in the 5e95% range.…”

Section: Hydrogen Plasma-induced Blisteringmentioning

confidence: 99%

“…In glow discharge experiments the appearance of plasmainduced blisters on the surface has been shown to serve as an indicator of extensive cracks forming deeper in the metal [9]. Glow discharge plasma studies revealed that parameters describing both cracks and blisters (size, density, depth of location, kinetics of development) depend not only on the irradiation dose, but also on the steel microstructure.…”

Section: Introductionmentioning

confidence: 98%

“…Glow discharge plasma studies revealed that parameters describing both cracks and blisters (size, density, depth of location, kinetics of development) depend not only on the irradiation dose, but also on the steel microstructure. Importantly, it was shown that the linear dimension of a subsurface crack is approximately equal to the diameter of associated blisters on the surface [9]. Under certain conditions the size of such cracks and their depth in the metal can be as large as several millimeters.…”

Section: Introductionmentioning

confidence: 99%

“…Ferritic steels are known to be particularly susceptible to nucleation of both blisters and associated subsurface cracks arising during exposure to glow discharge hydrogen plasma with ion energies of~1 keV [8,9]. Such low ion energies are known to be characteristic of near-wall plasma fluxes in fusion reactors [10].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Blister formation on 13Cr2MoNbVB ferritic-martensitic steel exposed to hydrogen plasma

Nikitin

Tolstolutskaya

Ruzhytskyi

et al. 2016

Journal of Nuclear Materials

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“…As noted in the introduction section the formation of plasmainduced blisters in non-deformed specimens is accompanied by concurrent formation of cracks [9]. Fig.…”

Section: Discussion On Mechanisms Of Blister Formationmentioning

confidence: 97%

“…[9]. In current paper we focus on the development of blisters on the surface, as a function of cold-deformation level in the 5e95% range.…”

Section: Hydrogen Plasma-induced Blisteringmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Blister formation on 13Cr2MoNbVB ferritic-martensitic steel exposed to hydrogen plasma

Nikitin

Tolstolutskaya

Ruzhytskyi

et al. 2016

Journal of Nuclear Materials

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Helium Porosity Development During Annealing of Helium-Implanted 18Cr10NiTi Steel

Ruzhytskyi

Karpov

Kalchenko

et al. 2018

EEJP

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The kinetics of helium porosity development during annealing of 18Cr10NiTi stainless steel irradiated with 20 keV helium ions at room temperature for simultaneous creation of displacement damage at a level of 0.5–5 dpa and a helium concentration of 1–12 at.%, have been investigated by electron microscopy and thermal desorption spectrometry. The temperature ranges of helium release from steel and their dependence on the irradiation dose are determined. The evolution of 18Cr10NiTi steel microstructure was investigated during post-implantation annealing in the temperature range from Troom to 1420 K. At a dose of 1·1020 m-2, helium bubbles were detected only after annealing to a temperature of 890 K, while at a dose of 1·1021 m-2, bubbles were observed immediately after radiation at Troom. During annealing, the average diameters of the bubbles vary from ~1 nm at Troom to 10–20 nm at Tann 1420 K. The mechanisms of bubbles growth either by migration and coalescence, or by Ostwald ripening – dissolution and re-trapping are considered. Since each of these mechanisms corresponds to a certain trend of bubbles size and density dependence on the annealing temperature, the temperature dependences of average diameters and densities of helium bubbles for a dose of 1·1021 m-2 have been constructed and analyzed. Experimental data are characterized by three temperature ranges: 1 – from 300 to 760 K, 2 – from 760 to 1030 K, and 3 – from 1030 to 1350 K with clearly differing trends. In the low-temperature region the diameter and density of the bubbles virtually does not change. Their size increases and the density decreases at annealing in the temperature range 760-1030 K. This tendency intensifies in the temperature range of 1030-1420 K. An estimation of activation energy of the processes controlling the mechanism of bubble growth in the temperature range of 1000-1420 K has been done. An obtained value of ~3.7 eV correlates well with the theoretically calculated value of the activation energy of the dissociation process (EHediss) of the Ostwald ripening mechanism.

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Crack formation in the 12Kh12M1BFR ferritic steel under the action of hydrogen ion flux

Cited by 2 publications

References 4 publications

Blister formation on 13Cr2MoNbVB ferritic-martensitic steel exposed to hydrogen plasma

Blister formation on 13Cr2MoNbVB ferritic-martensitic steel exposed to hydrogen plasma

Helium Porosity Development During Annealing of Helium-Implanted 18Cr10NiTi Steel

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