Search results for: L. I. Efron

Items from 1 to 20 out of 36 results

article

Austenitic Structure Evolution During Pipe Steel Coiled Rolled Product Manufacture in Casting and Rolling Complexes of Different Configurations

A. V. Muntin, A. V. Chastukhin, D. A. Ringinen, L. I. Éfron

Metallurgist > 2019 > 63 > 3-4 > 264-276

Different layouts of casting-rolling complexes are analyzed from the point of view of producing cold-resistant pipe steel grades X60–X70. Based on calculations for a recrystallization model it is possible to establish the effect of rolling equipment configuration and main process temperature and time parameters on austenitic structure quantitative characteristics. Using the criteria proposed possibilities...

article

Structure and Property Formation for Pipe Coiled Rolled Product During Manufacture Under Casting And Rolling Complex Conditions

A. V. Chervonnyi, D. A. Ringinen, A. V. Chastukhin, L. I. Éfron, more

Metallurgist > 2019 > 62 > 9-10 > 1012-1021

Results are provided for a comprehensive study of the structure and properties formation of microalloyed pipe steel produced in an AO United Metallurgical Company (Vyksa) casting and rolling complex conducted under laboratory and industrial conditions. The features of structure formation established are used to create steel compositions for electrically welded pipes and coiled rolled product manufacturing...

article

М/А-Constituent in Bainitic Low Carbon High Strength Steel Structure. Part 1

A. A. Kichkina, M. Yu. Matrosov, L. I. Éfron, D. A. Ringinen, more

Metallurgist > 2018 > 62 > 7-8 > 772-782

Results are provided for experimental studies of conditions for the formation of various types of M/A-constituent (structural component consisting of martensite and austenite) in the microstructure of low-carbon pipe steel specimens produced by rolling with thermomechanical treatment (controlled rolling and accelerated cooling). As a result of experiments different types of M/A constituent are obtained...

article

Development of a Manufacturing Technology in 5000 Mill of Rolled Product for Pipeline Projects with Extreme Parameters

V. I. Il’inskii, S. V. Golovin, P. P. Stepanov, D. A. Ringinen, more

Metallurgist > 2017 > 61 > 7-8 > 666-678

A system is described for development of new products and technology based on modeling, simulation, and laboratory testing for processes applied to VMZ 5000 rolling mill conditions. Approaches are demonstrated for creating slab heating technology using mathematical modeling of carbonitride particle dissolution and austenite grain growth as well as an approach to creating strategies for rough rolling...

article

Development of Economically Alloyed Pipe Steel of Strength Class K60

M. A. Tkachuk, S. V. Golovin, L. I. Efron, V. I. Il’inskii, more

Metallurgist > 2017 > 61 > 5-6 > 455-462

A comparative study is provided for the effect of different alloying versions on phase transformation, structure, and mechanical properties of low-alloy pipe steel. Steel alloyed economically with chromium is developed for producing sheet 21.6 (21.7) and 25.8 mm thick of strength class K60 intended for manufacturing pipe up to 1420 mm in diameter for main pipelines with a working pressure of up to...

article

Development of Steel Microalloying System for Cold-Resistant Coiled Product Designated for Pipes Under CRC Conditions

A. V. Chervonnyi, V. V. Naumenko, A. V. Muntin, L. I. Efron, more

Metallurgist > 2017 > 60 > 9-10 > 1038-1045

Results are provided for a study of the effect of microalloying steel with niobium, titanium,, and vanadium on the level of mechanical properties and cold resistance of coiled rolled product for pipe purposes produced under conditions of the OMK-Stal casting and rolling complex (CRC). It is shown that with a standard nitrogen content in steel (less than 0.008%) under CRC conditions introduction into...

article

Effect of Alloying with Molybdenum and Chromium on Pipe Steel of Strength Category X65 Properties

M. A. Tkachuk, S. V. Golovin, L. I. Efron, V. I. Il’inskii

Metallurgist > 2016 > 60 > 5-6 > 483-490

Kinetics of austenite phase transformation in previously deformed steels of different alloy systems during continuous cooling are studied. It is shown that with a basic chemical composition of 0.06% C and 1.55% Mn–Nb–Ti alloying with chromium (0.19%) leads to the formation after cooling of an almost identical microstructure, as also with addition of molybdenum (0.14%), from the point of view of fineness...

article

Development of Steel Chemical Composition and Heat Treatment for Electrowelded Casings with Increased Strength and Cold Resistance

V. N. Zikeev, A. N. Alistaev, N. V. Peiganovich, I. V. Peiganovich, more

Metallurgist > 2016 > 59 > 11-12 > 1106-1110

Steel microalloying combinations are studied, and heat treatment regimes are determined for preparing the required level of mechanical properties providing high quality characteristics for steels used in the manufacture of casings of strength group K55 according to the API standard Spec 5CT, including cold resistance to −60°C.

article

Kinetics of the Static Recrystallization of Austenite in Niobium-Microalloyed Pipe Steels

A. V. Chastukhin, D. A. Ringinen, G. E. Khadeev, L. I. Efron

Metallurgist > 2016 > 59 > 11-12 > 1180-1187

A method is described for experimentally determining the parameters of a model of the kinetics of static recrystallization. Use of the method ensures a close correlation between calculated and experimental values of the percentage of recrystallized metal (R = 0.97). It is shown that the probability of the occurrence of partial recrystallization between roughing passes must be accounted for in order...

article

Formation of Austenitic Structure During Heating Slabs of Pipe Steels Microalloyed with Niobium^*

A. V. Chastukhin, D. A. Ringinen, G. E. Khadeev, L. I. Efron

Metallurgist > 2015 > 59 > 7-8 > 581-589

The effect of heating temperature and holding duration for slabs in a furnace soaking zone on the structure of microalloyed steel austenite with a different strength category is studied. It is revealed that after heating and soaking in all cases there is possible formation of one of three types of austenitic structure: fine-grained, varying grain size, and coarse-grained. The reason for forming different...

article

Microalloying of low-temperature pipe steel for coil production by casting and rolling

A. V. Chervonnyi, V. V. Naumenko, A. V. Muntin, L. I. Efron, more

Steel in Translation > 2015 > 45 > 9 > 705-711

The microstructure of coils of pipe steel alloyed with niobium and titanium produced in a casting and rolling system is studied by means of an optical microscope and a transmission electron microscope. The mechanical properties of the steel coils are also investigated.

article

Influence of microalloying on the coiled strip (strength class K56) produced in a casting and rolling complex

V. V. Naumenko, A. V. Muntin, A. V. Chervonnyi, L. I. Efron

Steel in Translation > 2015 > 45 > 7 > 521-525

The influence of Nb and Ti microadditions on the microstructure and mechanical properties of coiled strip (strength class K56) produced by continuous casting and immediate rolling in a casting and rolling complex at AO OMK Stal’ (Vyksa) is investigated. High niobium content (0.08%) improves the cold strength of the steel in impact-flexure tests and drop tests at temperatures down to–80°C. Adding titanium...

article

Experience of Mastering Plate Production of Strength Category Sawl 450 for Deep-Water Pipes at the Vyksa Metallurgical Plant 5000 Mill

V. I. Il’inskii, M. Yu. Matrosov, P. P. Stepanov, L. I. Efron, more

Metallurgist > 2014 > 58 > 1-2 > 38-42

Production of plates of strength category DNV SAWL 450 SFDU, intended for manufacturing pipe with a 39 mm wall thickness for submarine pipelines, is mastered under industrial conditions at the 5000 mill of Vyksa Metallurgical Plant (VMZ). The effect of chemical composition and steel manufacturing technology on features of microstructure formation (including its morphological features and excess phase...

article

Evolution of Austenite Grain Structure and Microalloying Element Precipitation During Heating of Steel of Strength Class K65 (X80) for Rolling

D. A. Ringinen, A. V. Chastukhin, G. E. Khadeev, L. I. Efron, more

Metallurgist > 2014 > 57 > 11-12 > 996-1004

The effect of temperature and soaking time during slab heating for rolling on austenite structure size and uniformity, and dissolution of microalloying element precipitates, is considered. It is shown that the heating regime has a strong effect on austenite structure uniformity. With an increase in heating temperature, there is anomalous growth of individual grains, and this is a consequence of gradual...

article

A Weldability Study of Steel of Strength Class X100

D. A. Ringinen, A. V. Chastukhin, G. E. Khadeev, L. I. Efron, more

Metallurgist > 2014 > 57 > 11-12 > 1112-1119

The effect of welded joint heat-affected zone (HAZ) cooling rate on structure, mechanical properties and brittle failure resistance of pipe steels of strength class X100 is studied by simulating welding thermal cycles in a Gleeble-3180 test unit. These properties are compared with results obtained with pipe welding, and good correlation of data obtained in a laboratory and for an actual pipe is demonstrated...

article

Effect of deformation regime in main stages of controlled rolling on pipe steel microstructure

E. A. Goli-Oglu, L. I. Éfron, Yu. D. Morozov

Metal Science and Heat Treatment > 2013 > 55 > 5-6 > 294-297

The effect of controlled rolling deformation regimes on features of hot-deformed austenite structure formation and the final microstructure of low-carbon microalloyed pipe steel is studied. The effect of method for performing the rolling finish stage of grain size and austenite size distribution is established. The effect of deformation level and temperature of the finish rolling stage on final steel...

article

More effective thermomechanical treatment of microalloyed pipe steel

E. A. Goli-Oglu, L. I. Efron, Yu. D. Morozov

Steel in Translation > 2013 > 43 > 2 > 113-119

Attention focuses on how the basic hot-deformation parameters in thermomechanical treatment affect the structure formation of hot-deformed austenite, the microstructure, and the mechanical properties of low-carbon microalloy steels used for the manufacture of large-diameter gas pipelines. In rough rolling, small uniformly recrystallized austenite structure is formed and largely retained on subsequent...

article

Nonuniformity of steel plate mechanical properties after controlled rolling with accelerated cooling

E. A. Goli-Oglu, L. I. Efron

Metallurgist > 2013 > 57 > 1-2 > 49-56

The effect of temperature regimes for accelerated cooling in the range 820–590°C on low-carbon microalloyed steel plate microstructure and properties is studied. Microstructure formation features are determined with unequal cooling conditions over a workpiece length during manufacture by controlled rolling technology with accelerated cooling. Recommendations are made for improving property uniformity...

article

Influence of rolling temperature on the austenite structure and properties of low-carbon microalloyed steel

L. I. Efron, Yu. D. Morozov, E. A. Goli-Oglu

Steel in Translation > 2012 > 42 > 5 > 456-461

In laboratory conditions, the influence of the temperature interval in the finishing stage of controlled rolling on the structure of hot-deformed austenite, the final microstructure, and the properties of low-carbon microalloyed steel is studied. Experiments show that reducing that temperature interval within the range T _nr-A _r3 reduces the grain size in the direction transverse to rolling and increases...

article

Complete and Incomplete Wetting of Ferrite Grain Boundaries by Austenite in the Low-Alloyed Ferritic Steel

B. B. Straumal, Y. O. Kucheev, L. I. Efron, A. L. Petelin, more

Journal of Materials Engineering and Performance > 2012 > 21 > 5 > 667-670

Low-carbon low-alloyed ferritic steels are the main material for the production of high-strength pipes for the transportation of oil and gas. The formation of brittle carbide network during the lifetime of a pipeline could be a reason for a catastrophic failure. Among other reasons, it can be controlled by the morphology of grain boundary (GB) carbides. The microstructure of a low-alloyed ferritic...

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Search results for: L. I. Efron

Austenitic Structure Evolution During Pipe Steel Coiled Rolled Product Manufacture in Casting and Rolling Complexes of Different Configurations

Structure and Property Formation for Pipe Coiled Rolled Product During Manufacture Under Casting And Rolling Complex Conditions

М/А-Constituent in Bainitic Low Carbon High Strength Steel Structure. Part 1

Development of a Manufacturing Technology in 5000 Mill of Rolled Product for Pipeline Projects with Extreme Parameters

Development of Economically Alloyed Pipe Steel of Strength Class K60

Development of Steel Microalloying System for Cold-Resistant Coiled Product Designated for Pipes Under CRC Conditions

Effect of Alloying with Molybdenum and Chromium on Pipe Steel of Strength Category X65 Properties

Development of Steel Chemical Composition and Heat Treatment for Electrowelded Casings with Increased Strength and Cold Resistance

Kinetics of the Static Recrystallization of Austenite in Niobium-Microalloyed Pipe Steels

Formation of Austenitic Structure During Heating Slabs of Pipe Steels Microalloyed with Niobium^*

Microalloying of low-temperature pipe steel for coil production by casting and rolling

Influence of microalloying on the coiled strip (strength class K56) produced in a casting and rolling complex

Experience of Mastering Plate Production of Strength Category Sawl 450 for Deep-Water Pipes at the Vyksa Metallurgical Plant 5000 Mill

Evolution of Austenite Grain Structure and Microalloying Element Precipitation During Heating of Steel of Strength Class K65 (X80) for Rolling

A Weldability Study of Steel of Strength Class X100

Effect of deformation regime in main stages of controlled rolling on pipe steel microstructure

More effective thermomechanical treatment of microalloyed pipe steel

Nonuniformity of steel plate mechanical properties after controlled rolling with accelerated cooling

Influence of rolling temperature on the austenite structure and properties of low-carbon microalloyed steel

Complete and Incomplete Wetting of Ferrite Grain Boundaries by Austenite in the Low-Alloyed Ferritic Steel

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