Search Results - "Efimenko, L.A."

Calculation and experimental analysis of the parameters thermal cycles of welding methods used in the repair of ring joints of gas pipelines by Efimenko, L.A., Kapustin, O.E., Derkach, A.P., Murashov, N.A., Gubjin, I.M., Sevostyanov, S.P., Ramus, R.O.

“…The article describes a technique that allows for the computational assessment of thermal cycles with various technologies for repair of gas pipelines. A…”
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Evaluation of residual stresses and structural-phase composition in longitudinal welds of high pressure pipes by Antonov, A.A., Efimenko, L.A., Kapustin, O.E., Ponomarenko, D.V., Utkin, I.Yu, Fedorov, M.A., Romantsov, A.I.

“…The features of the formation of residual welding stresses and structural-phase composition in welded joints of the longitudinal joints of high-pressure pipes…”
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On the decomposition of austenite in the heat-affected zone upon welding of high-strength steels by Efimenko, L. A., Ramus’, A. A., Merkulova, A. O.

“…The kinetics of the decomposition of austenite in the heat-affected zone of welded joints of low-carbon microalloyed high-strength steels has been…”
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Evaluation of Structural and Phase Composition and Corrosion Resistance Properties of Coatings Made by Laser Surfacing. Part 1 by Efimenko, L. A., Kapustin, O. E., Gusev, V. M., Merkulova, A. O., Nikiforov, N. I.

“…Microstructure, porosity, and corrosion resistance are evaluated for different forms of coating made by laser surfacing…”
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Study of the Effect of Strain Ageing on Corrosion Failure and Submicrostructure of Low-Carbon Steels for Gas-Distribution Pipelines by Elagina, O. Yu, Efimenko, L. A., Volkov, I. V.

“…Questions are considered of the effect of strain ageing for low-carbon unalloyed steels used for gas distribution pipelines on their corrosion resistance under…”
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Effect of operating conditions on pipe steel fatigue properties by Shapovalova, Yu. D, Romanova, T.I, Efimenko, L.A, Elagina, O. Yu, Vyshemirskii, D.E

“…The effect of the degree of deformation and operating temperature on the change in fatigue properties of steels of different strength categories is considered…”
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Effect of strain ageing of high-strength pipe steels on their weldability by Efimenko, L. A., Elagina, O. Yu, Shkapenko, A. A., Ilyukhin, V. Yu

“…Features of the change in properties of pipe steel of strength category Kh80 during strain ageing and its effect on weldability are studied. It is shown that…”
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Evaluation of hard-facing and process of its application on drill pipe tool joints by Grigoriev, S. B., Efimenko, L. A., Salnikov, V. G., Gadalov, V. N., Romanenko, D. N.

“…One of the important components of a drilling tool is the tool joint of drill pipes. It serves as a joining unit of drill pipes constituting the drill string…”
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Repair Features of Mechanical and Corrosion Damage in a Main Gas Pipeline Under Pressure by Efimenko, L. A., Elagina, O. Yu, Ramus’, A. A., Volkov, I. V., Ladyzhanskii, A. P., Rakhmanov, D. V., Konovalov, A. V., Kurkin, A. S.

“…An approach is proposed for repair technology of mechanical and corrosion damage in gas pipelines under pressure by welding (built-up welding) taking account…”
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Investigation of the weldability of high-strength pipe steels of X80 strength grade by Efimenko, L.A., Elagina, O.Yu, Kapustin, O.E., Vyshemirskii, E.M.

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Safety evaluation for prolonged gas pipeline operation in areas of high seismicity by Elagina, O. Y., Efimenko, L. A., Vyshegorodtseva, G. I., Kolesnikov, A. Y., Kadai, A. D.

“…The article considers questions of changes in pipe steel properties of strength category K50–K56 during operation under conditions of the action of seismic…”
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Study of material condition for underground pipelines with exhausted design operating life by Gadalov, V. N., Romanenko, D. N., Rybakova, L. A., Trepakov, A. V., Efimenko, L. A., Grigoriev, S. B.

“…Results are presented for metallographic analysis and mechanical tests for gas pipeline metal specimens, having operated for about fifteen years…”
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Evaluation of the effect of production and operating parameters on the durability and safety of assembled welded joints of valve fittings by Efimenko, L. A., Elagina, O. Yu, Vyshegorodtseva, G. I., Konovalova, O. V.

“…Questions are considered of the reliability of assembled welded joints of valve fittings. It is proposed to use impact strength as a criterion of welded metal…”
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Analysis of the susceptibility of pipe steels of different strength groups to thermal strain ageing by Efimenko, L.A., Kapustin, O.E., Ilyukhin, V.Yu, Konovalova, O.V.

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