Microstructural study of WWER reactor pressure vessel steels

Slugeň, V.; Kryukov, A.

doi:10.1016/j.nucengdes.2013.06.013

Cited by 8 publications

(2 citation statements)

References 29 publications

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“…These attributes must be studied especially in the case of stainless steels that are used as a basic material for construction of various components of nuclear installations. [1][2][3] It is apparent that in various alloys, chromium has anticorrosion properties because of formation of surface segregation and passivation layer. [4][5][6][7] That is why stainless steels with high amount of chromium are suitable candidates for constructions of nuclear reactor pressure vessels.…”

Section: Introductionmentioning

confidence: 99%

Mössbauer Spectrometry of Model Binary Fe_100−xCr_x (1 ≤ x ≤ 50) Alloys

Košovský

Miglierini

Pavúk

et al. 2022

Physica Status Solidi (b)

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Herein, several ways to evaluate Mössbauer spectra of model binary Fe100−xCrx alloys with chromium content varying in the range from 1 to 50 at% (x = 0.94, 2.2, 4.9, 10.4, 15.4, 22.1, and 52.9) are discussed. For low chromium concentrations (up to 15 at%), the method of binomial distribution of individual sextets is suitable. Depending upon the Cr content, the number of sextets used can be, however, as high as 20. The specific number of sextets is determined according to probabilities of individual atomic sites calculated from binomial distribution. Mössbauer spectra of samples with Cr concentrations higher than 20 at% are evaluated by distributions of hyperfine magnetic fields. The composition of model alloys is verified using X‐ray fluorescence. Their surface is analyzed by two different surface‐sensitive methods: scanning electron microscopy and atomic force microscopy. The main technique used to analyze the materials’ subsurface layers is conversion electron Mössbauer spectroscopy. The applied fitting models and results are useful in studies of the microstructure of real types of construction and stainless steels.

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Section: Introductionmentioning

confidence: 99%

Mössbauer Spectrometry of Model Binary Fe_100−xCr_x (1 ≤ x ≤ 50) Alloys

Košovský

Miglierini

Pavúk

et al. 2022

Physica Status Solidi (b)

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“…), and the original microstructure (phase, grain boundary size). [5][6][7][8] However, due to the microstructure complexity of the irradiated materials and the objective limitation of service environment, it is very hard to study and predict the long-term evolution of microstructures through experimental methods. [9,10] Therefore, the research on simulation methods have been paid more focuses.…”

Section: Introductionmentioning

confidence: 99%

Evolution of ion-irradiated point defect concentration by cluster dynamics simulation*

Feng¹,

Shasha²,

Chen³

et al. 2021

Chinese Phys. B

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The relationship between ions irradiation and the induced microstructures (point defects, dislocations, clusters, etc.) could be better analyzed and explained by simulation. The mean field rate theory and cluster dynamics are used to simulate the effect of implanted Fe on the point defects concentration quantitatively. It is found that the depth distribution of point defect concentration is relatively gentle than that of damage calculated by SRIM software. Specifically, the damage rate and point defect concentration increase by 1.5 times and 0.6 times from depth of 120 nm to 825 nm, respectively. With the consideration of implanted Fe ions, which effectively act as interstitial atoms at the depth of high ion implantation rate, the vacancy concentration C v decreases significantly after reaching the peak value, while the interstitial atom concentration C i increases significantly after decline of the previous stage. At the peak depth of ion implantation, C v dropped by 86%, and C i increased by 6.2 times. Therefore, the implanted ions should be considered into the point defects concentration under high dose of heavy ion irradiation, which may help predict the concentration distribution of defect clusters, further analyzing the evolution behavior of solute precipitation.

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