Experimental Determination of Temperature Parameters for Evaluating the Possibility of Manufacturing Alloy Ti–3Al–2.5V Hot-Extruded Tubes

Илларионов, А. Г.; Kosmatskii, Ya. I.; Filyaeva, E. A.; Водолазский, Ф. В.; Баранникова, Н. А.

doi:10.1007/s11015-017-0396-x

Cited by 10 publications

(5 citation statements)

References 2 publications

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“…Obviously, due to the vanadium alloying of the Ti-3Al-2.5V, this temperature significantly decreases. That is why the β-phase can be fixed down to room temperature, which was confirmed by the results of our previous studies [19] and according to the fact, that the alloy belongs to the near-α-alloys which have up to 5% β-phase near room temperature [20].…”

supporting

confidence: 78%

Calculation of Phase Composition of α- and Near-α- Titanium Alloys

Vodolazskiy

Gornostaeva²,

Илларионова

2020

SSP

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supporting

confidence: 78%

Calculation of Phase Composition of α- and Near-α- Titanium Alloys

Vodolazskiy

Gornostaeva²,

Илларионова

2020

SSP

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“…The PT-3V alloy is an analog of Grade 9 alloy (Ti -(2.5-3.5)%Al-(2-3)%V) but differs from this one by an increased Al content. The bars of alloy of 20 mm in diameter were made by Chepetsky Mechanical Plant Co. by hot deformation with gradual reduction of temperature from the β-phase range to the (α+β)-one (see [62][63][64]). The chemical composition of the alloy is presented in Table 1.…”

Section: Methodsmentioning

confidence: 99%

“…The heating rate Vh varied from 10 to 350 о С/min, the applied uniaxial stress P changed from 50 to 100 MPa, the processing time varied from 0 to 90 min. The welding temperature T ranged from 600 to 1140 о C: the welding was performed in the α-region (Т = 600 о C), near the boundary of the α-β phase transition for the Ti-Al-V alloys (Т = 700 о C), in the beginning of the two-phase α+βregion (T = 800 о C), and in the region of stable β-phase (Т = 1030, 1140 о C) (see [62][63][64]). The accuracy of temperature control was  10 о С. Welding was performed in vacuum (6 Pa).…”

Section: Methodsmentioning

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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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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“…Argon gas acts as a pressure divider. The amount of oxygen and argon to be blown in needs to be judged according to the different smelting conditions [10]. A low-carbon ferrochrome is obtained with a carbon content that meets the conditions.…”

Section: Introductionmentioning

confidence: 99%

Study on Adaptive Parameter Internal Mode Control Method for Argon–Oxygen Refining Ferrochrome Alloy

Han

Wen

et al. 2023

Processes

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In order to determine a way to be able to shorten the smelting time of low-carbon ferrochrome alloys and to strengthen the temperature control capability of the AOD converter during the smelting process, this article establishes a mechanism model of the rate of oxygen supply and carbon content change in the smelting process as well as the temperature of the reaction fluid in the converter. The physical and chemical reactions of the smelting process and the actual smelting data are used as the basis. The temperature and carbon content in the smelting converter are considered as the output quantity and the rate of oxygen supply is considered as the input quantity. An expert internal model control framework is built. In addition, an adaptive parameter adjustment mechanism is added to the control framework, taking into account data such as the maximum gas supply rate and the maximum limiting temperature of the actual production process. This method improves the smelting speed and smelting accuracy compared to the general internal mode control method. Finally, according to this method, with the use of the built low-carbon ferrochrome alloy centralized control system for smelting, the system shortens the smelting time by 12.79% compared with the general method and controls the converter temperature below 1950 K, which achieves the expected goal according to the simulation and actual smelting results.

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Experimental Determination of Temperature Parameters for Evaluating the Possibility of Manufacturing Alloy Ti–3Al–2.5V Hot-Extruded Tubes

Cited by 10 publications

References 2 publications

Calculation of Phase Composition of α- and Near-α- Titanium Alloys

Calculation of Phase Composition of α- and Near-α- Titanium Alloys

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

Study on Adaptive Parameter Internal Mode Control Method for Argon–Oxygen Refining Ferrochrome Alloy

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