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Ioltukhovskii, A. G.; Leont’eva-Smirnova, M. V.; Чернов, В. М.; Tsvelev, V. V.; Solonin, M. I.; Golovanov, V. N.; Shamardin, V.K.

doi:10.1023/a:1022500704754

Cited by 5 publications

(1 citation statement)

References 3 publications

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“…As objects for investigation we used samples 50-80 mm in length made of fuel element claddings 6.9 mm in diameter (wall thickness of 0.4-0.5 mm) of dispersion hardening chromium steels of grade ChS139, EP823, and EP900 and low activated steel of grade EK181 [12]. The elemental composition aver aged by TU (Standard) for investigated steels is listed in Table 1.…”

Section: Methodsmentioning

confidence: 99%

Modification of the structural-phase state of ferritic-martensitic steels by pulsed gas plasma flows

Yakushin

Khein

Джумаев

et al. 2013

Inorg. Mater. Appl. Res.

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The effect of pulsed plasma flow treatment on the structural phase state (SPS) and the strength ening of near surface layers of fuel claddings of chromium ferritic-martensitic steels is investigated. The modification of cladding sections is performed by helium and nitrogen plasma flows with a specific power varying in the range of 0.6-5.2 MW/cm 2 at a pulse duration of ~15-20 μs. The number of irradiation pulses N is varied from 2 to 10. It is found that the treatment of claddings by plasma flows with a specific power of ~1.0 MW/cm 2 (N = 2) results in surface melting. The solidification of near surface layers forms a two dimen sional nanocrystalline structure with a lateral dimension of grains of ~100 nm. It is revealed that the plasma treatment results in a change in the crystallographic texture of surface layers of claddings, causing the growth of texture component {100} along the radial direction of claddings, and in a decrease in the lattice parameter determined by the orientation of source grains. It is shown that the occurring structural phase changes result in the surface strengthening of claddings up to 50%, whose degree depends on plasma treatment conditions.

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Section: Methodsmentioning

confidence: 99%

Modification of the structural-phase state of ferritic-martensitic steels by pulsed gas plasma flows

Yakushin

Khein

Джумаев

et al. 2013

Inorg. Mater. Appl. Res.

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Self-passivating smart tungsten alloys for DEMO: a progress in joining and upscale for a first wall mockup

et al. 2021

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Self-passivating, so-called smart alloys are under development for a future fusion power plant. These alloys containing tungsten, chromium and yttrium must possess an acceptable plasma performance during a regular plasma operation of a power plant and demonstrate the suppression of non-desirable oxidation of tungsten in case of an accident. The up-scaling of the bulk smart alloys to the reactor-relevant sizes has begun and the first samples with a diameter of 50 mm and thickness of 5 mm became available. The samples feature high relative density of above 99% and good homogeneity. With production of bulk samples, the research program on joining the smart alloy to the structural material was initiated. In a present study, the novel titanium–zirconium–beryllium braze was applied successfully to join the smart alloy to the Rusfer-reduced-activation steel. The braze has survived at least a hundred of cyclic thermal excursions in the range of 300–600 °C without mechanical destruction.

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Neural-Net Analysis of the Plasticity of ÉP-450 Ferrite–Martensite Steel with Different Alloying Element Concentrations

et al. 2004

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Cited by 5 publications

References 3 publications

Modification of the structural-phase state of ferritic-martensitic steels by pulsed gas plasma flows

Modification of the structural-phase state of ferritic-martensitic steels by pulsed gas plasma flows

Self-passivating smart tungsten alloys for DEMO: a progress in joining and upscale for a first wall mockup

Neural-Net Analysis of the Plasticity of ÉP-450 Ferrite–Martensite Steel with Different Alloying Element Concentrations

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