Titanium alloys in steam turbine construction

Leonov, V. P.; Gorynin, I. V.; Kudryavtsev, A. S.; Travin, V. V.; Lysenko, L. V.

doi:10.1134/s2075113315060076

Cited by 12 publications

(5 citation statements)

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“…systems) are used widely in marine engineering, steam turbines, nuclear power engineering, etc. [1][2][3][4][5][6][7]. Enhanced requirements of strength, ductility, fatigue strength, corrosion and radiation resistance, heat resistance, etc.…”

Section: Introductionmentioning

confidence: 99%

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Corrosion Resistance of the Welded Joints From the Ultrafine-Grained Near-α Titanium Alloys Ti-5Al-2V Obtained by Spark Plasma Sintering

Чувильдеев¹,

Нохрин²,

Likhnitskii³

et al. 2023

Preprint

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A diffusion welding of coarse-grained and ultrafine-grained (UFG) specimens of titanium near-α alloy Ti-5Al-2V used in nuclear power engineering was made by Spark Plasma Sintering. The failure of the welded specimens in the conditions of hot salt corrosion and of electrochemical corrosion were shown to have preferentially intercrystalline character. In the case of presence of macrodefects, crevice corrosion of the welded joints was observed. The resistance of the alloys against the intercrystalline corrosion was found to be determined by the concentration of vanadium at the titanium grain boundaries, by the size and volume fraction of the β-phase particles and by the presence of micro- and macropores in the welded joints. The specimens of the welded joints of the UFG alloy have higher hardness, hot salt corrosion resistance and the electrochemical corrosion.

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Section: Introductionmentioning

confidence: 99%

“…Enhanced requirements of strength, ductility, fatigue strength, corrosion and radiation resistance, heat resistance, etc. are imposed onto the titanium alloys used in nuclear power engineering [3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Corrosion Resistance of the Welded Joints From the Ultrafine-Grained Near-α Titanium Alloys Ti-5Al-2V Obtained by Spark Plasma Sintering

Чувильдеев¹,

Нохрин²,

Likhnitskii³

et al. 2023

Preprint

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show abstract

“…Light metals like magnesium, aluminum, and titanium have become popular in recent years due to the fact that they carry a promising potential for high specific mechanical properties. From the composite and foam industry to the medical and construction sector, many different usage areas can be counted for these metals depending on design requirements [1][2][3][4][5]. Owing to their low density and high strength combination, total interest in these classes of materials by researchers and engineers working on structural optimizations has started to rise nowadays [6,7].…”

Section: Introductionmentioning

confidence: 99%

Farklı seramik kaplı Ti-6Al-4V alaşımının doğal frekansına konik açı ve sınır koşulunun etkisinin sonlu eleman analizi ile incelenmesi

Ergene

Bolat

2022

NÖHÜ Müh. Bilim. Derg.

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In recent years, the interest in light metals has increased due to the increasing demand for components with high specific strength and long service life in the industry. In this context, titanium alloys have become very common and popular owing to their high strength/weight properties and superior refractory characteristics. In this study, the effect of boundary condition and tapered angle on the natural frequency and vibration behavior of the beam was investigated in Ti-6Al-4V beams coated with three different ceramic materials; Al2O3, AlN, and TiB2. Tapered angle values are considered as 0°, 0.2°, 0.4°, 0.6° and 0.8°. Besides, boundary conditions were evaluated in two conditions including left side fixed or both sides fixed. All analyzes were performed in the finite element-based Ansys APDL 19 program. According to the results obtained from the analyses, it was observed that there was a change in the natural frequency values according to the type of coating material, but no difference was found in terms of increase/decrease tendency. In addition, the resultant displacement values were determined for all samples. The results indicated that the resultant displacement values were severely affected by the tapered angle. A decreasing resultant displacement trend was observed in all samples with increasing tapered angle.

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“…At present, titanium (Ti) alloys are one of the principal materials in nuclear and marine engineering [1][2][3][4]. αand near-α Ti alloys (Russian industrial names PT-3V, PT-7M, etc.)…”

Section: Introductionmentioning

confidence: 99%

“…αand near-α Ti alloys (Russian industrial names PT-3V, PT-7M, etc.) are used most often in nuclear power engineering [3,4], new two-phase α + β alloys are increasingly used in marine engineering in recent years [1,2]. The extreme operational conditions (high temperatures, loads, impact of corrosion-aggressive ambient, radiation environment, etc.)…”

Section: Introductionmentioning

confidence: 99%

Investigation of Microstructure and Corrosion Resistance of Ti-Al-V Titanium Alloys Obtained by Spark Plasma Sintering

Нохрин

Андреев

Болдин

et al. 2021

Metals

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The research results of the microstructure and corrosion resistance of Ti and Ti-Al-V Russian industrial titanium alloys obtained by spark plasma sintering (SPS) are described. Investigations of the microstructure, phase composition, hardness, tensile strength, electrochemical corrosion resistance and hot salt corrosion of Ti-Al-V titanium alloy specimens were carried out. It was shown that the alloy specimens have a uniform highly dense microstructure and high hardness values. The studied alloys also have high resistance to electrochemical corrosion during tests in acidic aqueous solution causing the intergranular corrosion as well as high resistance to the hot salt corrosion. The assumption that the high hardness of the alloys as well as the differences in the corrosion resistance of the central and lateral parts of the specimens are due to the diffusion of carbon from the graphite mold into the specimen surface was suggested.

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Titanium alloys in steam turbine construction

Cited by 12 publications

References 0 publications

Corrosion Resistance of the Welded Joints From the Ultrafine-Grained Near-α Titanium Alloys Ti-5Al-2V Obtained by Spark Plasma Sintering

Corrosion Resistance of the Welded Joints From the Ultrafine-Grained Near-α Titanium Alloys Ti-5Al-2V Obtained by Spark Plasma Sintering

Farklı seramik kaplı Ti-6Al-4V alaşımının doğal frekansına konik açı ve sınır koşulunun etkisinin sonlu eleman analizi ile incelenmesi

Investigation of Microstructure and Corrosion Resistance of Ti-Al-V Titanium Alloys Obtained by Spark Plasma Sintering

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