Relevant bibliographies by topics / Ferritic steel corrosion resistant alloys vanadium

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Academic literature on the topic 'Ferritic steel corrosion resistant alloys vanadium'

Author: Grafiati
Published: 4 June 2021
Last updated: 7 February 2022

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Journal articles on the topic "Ferritic steel corrosion resistant alloys vanadium"

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Votinov, S. N., V. P. Kolotushkin, I. E. Lyublinskii, A. V. Vertkov, S. A. Nikulin, and V. Yu Turilina. "Corrosion resistance of vanadium alloys clad by a ferritic corrosion-resistant steel in liquid-metal heat-transfer agents." Russian Metallurgy (Metally) 2009, no. 1 (February 2009): 82–87. http://dx.doi.org/10.1134/s0036029509010145.

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Rodionova, Irina, Andrey Amezhnov, Ekaterina Alekseeva, Yuliya Gladchenkova, and Irina Vasechkina. "Effect of Carbonitride Precipitates on the Corrosion Resistance of Low-Alloy Steels under Operating Conditions of Oil-Field Pipelines." Metals 11, no. 5 (May 7, 2021): 766. http://dx.doi.org/10.3390/met11050766.

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An investigation into the corrosion resistance of steels with various contents of carbon and microalloying elements was carried out. It was shown that the presence of a large amount of nanosized (2–3 nm and less) precipitates of the interphase type, particularly niobium carbonitride and vanadium carbonitride, leads to a decrease in the corrosion resistance of hot-rolled sheet products. It was found that, after heat treatment of rolled products at 710 °C, the corrosion resistance of the metal is improved. One of the reasons for this is a decrease in the amount of interphase precipitates, which negatively affect the corrosion resistance of steel, while particles formed in austenite and ferrite do not have such an effect. To ensure high corrosion resistance of steels for oil-field pipelines, microalloying with niobium instead of vanadium is advisable, as well as heat treatment at temperatures above 710 °C.
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Ahssi, Mohamed Ahmed Mohamed, Mehmet Akif Erden, Mustafa Acarer, and Harun Çuğ. "The Effect of Nickel on the Microstructure, Mechanical Properties and Corrosion Properties of Niobium–Vanadium Microalloyed Powder Metallurgy Steels." Materials 13, no. 18 (September 10, 2020): 4021. http://dx.doi.org/10.3390/ma13184021.

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In this study, the effects of adding Ni in different ratios to Fe-matrix material containing C-Nb-V produced by powder metallurgy on microstructure, tensile strength, hardness and corrosion behaviors were investigated. Fe-C and Fe-C-Nb-V powders containing 5%, 10%, 13%, 15%, 20%, 30% and 40% nickel were pressed at 700 MPa and then sintered in an Ar atmosphere at 1400 °C. Microstructures of the samples were characterized with optical microscope, scanning electron microscope (SEM) and XRD. Corrosion behaviors were investigated by obtaining Tafel curves in an aqueous solution containing 3.5% NaCl. Mechanical properties were determined by hardness and tensile testing. While Fe-C alloy and Fe-C-Nb-V microalloyed steel without Ni typically have a ferrite-pearlite microstructure, the austenite phase has been observed in the microstructures of the alloys with 10% nickel and further. Yield and tensile strength increased with nickel content and reached the highest strength values with 13% Ni content. The addition of more nickel led to decrease the strength. Analysis of Tafel curves showed that corrosion resistance of alloys increased with increasing nickel concentration.
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Rogachev, S. O., V. A. Belov, S. A. Nikulin, V. M. Khatkevich, and A. V. Molyarov. "Fracture Toughness of Ferritic Corrosion-Resistant Steel Subjected to High-Temperature Nitriding." Russian Metallurgy (Metally) 2020, no. 4 (April 2020): 454–60. http://dx.doi.org/10.1134/s0036029520040229.

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Parti, József, and Valéria Mertinger. "Analysis of the Effect of Cooling Rate on Microstructure in 17% Cr Ferritic Cast Steel." Materials Science Forum 790-791 (May 2014): 229–34. http://dx.doi.org/10.4028/www.scientific.net/msf.790-791.229.

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High Cr and Ni content steels are widely used in many manufacturing processes in the chemical and petrochemical industry. The automotive industry has also recognized the necessity of heat resistant alloys for a long time, for example, to apply them to exhaust systems to endure thermal loading and oxidation during the operation of engines. Various heat resistant alloys such as cast irons, stainless steels, and Ni-base super alloys have been considered as candidate materials of automotive exhaust systems. Among those candidates, ferritic stainless steels attracted a lot of attention due to their favorable low thermal expansion, sufficient mechanical strength at elevated temperature and excellent corrosion resistant properties [1]. Currently they are the leading engineering materials in several fields of applications that require resistance to wear, corrosion [2,3], creep or thermal fatigue [4]. The high corrosion resistance of these steels is due to alloying elements such as Cr, Ni and Mo. If the ferritic stainless steels are alloyed with strong carbide-forming elements, such as Mo, Ti, V and Nb, hard phases, MC carbides can be obtained in the soft ferrite phase [5,6]. The improvement of the properties of FeCrNi cast steels is directly related to the development of the microstructure, which mainly consists of a ferritic matrix and carbides and/or dispersed intermetallics [7,8]. The improvement is not always the hardening. The hardness is usually limited by the casting and the subsequent machining, so an annealing process is also inserted.
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Mal’tseva, L. A. "Structure and strength properties of a corrosion-resistant austenitic-ferritic medical steel after thermoplastic deformation." Russian Metallurgy (Metally) 2011, no. 4 (April 2011): 307–13. http://dx.doi.org/10.1134/s0036029511040112.

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Eren, Hulya, Mustafa Aksoy, Mehmet H. Korkut, and Mehmet Erbil. "Effect of Vanadium and Heat Treatment on the Corrosion Behavior of Ferritic Stainless Steel." Practical Metallography 45, no. 5 (May 2008): 225–41. http://dx.doi.org/10.3139/147.100381.

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Nechaikina, T. A., S. A. Nikulin, S. O. Rogachev, V. Yu Turilina, and A. P. Baranova. "FRACTURE RESISTANCE OF “TRANSITION” AREA IN THREE-LAYER STEEL/VANADIUM ALLOY/STEEL COMPOSITE AFTER THERMOMECHANICAL TREATMENT." Izvestiya Visshikh Uchebnykh Zavedenii. Chernaya Metallurgiya = Izvestiya. Ferrous Metallurgy 61, no. 6 (July 28, 2018): 447–53. http://dx.doi.org/10.17073/0368-0797-2018-6-447-453.

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The creation of new structural materials for cladding tubes of fast neutron reactors is an urgent task of modern nuclear power engineering. A three-layer radiation-resistant and corrosion-resistant material based on vanadium alloy and stainless steel, intended for work under extreme conditions (high temperatures, radiation and aggressive environment) of operation of fast neutron reactor cladding tubes has been developed in recent years. The most important aspect determining the operability of this material during operation is the quality of the joining of different materials layers among themselves, determined by the modes of thermomechanical treatment. The effect of the annealing on the chemical composition, structure, and fracture resistance of the “steel/vanadium alloy” interface in the steel/vanadium alloy/steel three-layer tube, obtained by hot co-extrusion of three-layer tube billet at 1100 °C was studied. The 20Kh13 (AISI 420 type) steel for the outer layers and V – 4Ti – 4Cr vanadium alloy for the core were used as the components of the tube. The structure and chemical composition in the layer joining zone were studied using the optical microscopy and electron microscopy with X-ray microspectral analysis. The fracture resistance of the “steel/vanadium alloy” interface was evaluated by a compression test of a three-layer ring sample with notch using an acoustic emission (AE) measurement. It is shown that after co-extrusion a “transition” area of diffusion interaction having a variable chemical composition with a width of 10–15 μm is formed between vanadium alloy and steel, which represents the continuous series of solid solutions, without precipitation of brittle phases, providing a strong bonding between vanadium alloy and steel in the three-layer material. No voids, delaminations or defects were detected at the “steel/vanadium alloy” interface. However, a crack is formed in the steel layer during the compression tests of the notched semi-ring three-layer samples after hot co-extrusion. Annealing favorably influences the formation of the “transition” area due to the increase in the width of the diffusion interaction area. No cracks or delaminations at the boundary between steel and vanadium layers were observed in the three-layer tube samples after annealing, and the three-layer material behaves like a monolith material during testing.
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Nikitin, V. P., D. V. Shaburov, A. P. Shlyamnev, M. N. Shmatko, and G. E. Trusov. "Special features of formation of structure and properties of rolled corrosion-resistant ferritic class steel sheet." Metal Science and Heat Treatment 33, no. 5 (May 1991): 412–15. http://dx.doi.org/10.1007/bf00775597.

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Stradomski, G. "The Analysis of AISI A3 Type Ferritic-Austenitic Cast Steel Crystallization Mechanism." Archives of Foundry Engineering 17, no. 3 (September 1, 2017): 229–33. http://dx.doi.org/10.1515/afe-2017-0120.

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AbstractHigh-alloy corrosion-resistant ferritic-austenitic steels and cast steels are a group of high potential construction materials. This is evidenced by the development of new alloys both low alloys grades such as the ASTM 2101 series or high alloy like super or hyper duplex series 2507 or 2707 [1-5]. The potential of these materials is also presented by the increasing frequency of sintered components made both from duplex steel powders as well as mixtures of austenitic and ferritic steels [6, 7]. This article is a continuation of the problems presented in earlier works [5, 8, 9] and its inspiration were technological observed problems related to the production of duplex cast steel.The analyzed AISI A3 type cast steel is widely used in both wet exhaust gas desulphurisation systems in coal fired power plants as well as in aggressive working environments. Technological problems such as hot cracking presented in works [5, 8], with are effects of the rich chemical composition and phenomena occurring during crystallization, must be known to the technologists.The presented in this work phenomena which occur during the crystallization and cooling of ferritic-austenitic cast steel were investigated using numerical methods with use of the ThermoCalc and FactSage® software, as well with use of experimental thermal-derivative analysis.
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Dissertations / Theses on the topic "Ferritic steel corrosion resistant alloys vanadium"

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Ras, Mechiel Hendrik. "The use of vanadium to enhance localised corrosion resistance in 18% chromium ferritic stainless steel." Diss., 2001. http://hdl.handle.net/2263/26412.

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In applications where resistance to localised corrosion is required, stainless steel alloys containing molybdenum are generally used thanks to their superior resistance to localised attack in aggressive environments. For ferritic stainless steels, vanadium additions have been found to also have a beneficial effect on the resistance to localised corrosion. In this study vanadium and molybdenum were compared directly as alloying elements in 18% chromium ferritic stainless steel as far as their effect on increasing the resistance to localised corrosion is concerned. Pitting potentials in a neutral chloride solution were used as the criterion for qualifying resistance to localised corrosion and it was shown that vanadium gave similar or slightly higher pitting potentials at addition levels of up to 4% (weight percent). It was subsequently found that the mechanism by which the molybdenum and the vanadium increase the resistance to localised corrosion, are not the same. The experimental data for the molybdenum containing alloys corresponded well with other work done in this field. The positive effect of molybdenum additions on the pitting resistance of these alloys could be explained through its effect in lowering the dissolution rate in the active dissolution region by enriching on the dissolving surface. The vanadium additions to these alloys were shown not to have an effect on the active dissolution kinetics. The effect of these two alloying elements on the initiation of metastable pits were examined, but no meaningful advantage for the vanadium containing alloys over the rest could be found. It is suggested that vanadium play a role in changing the dissolution kinetics of the salt film, which forms during the growth of a metastable pit. A delayed dissolution of salt film remnants would lead to a loss of the enriched pit solution, which would cause the metastable pit to repassivate.
Dissertation (M Eng (Metallurgical Engineering))--University of Pretoria, 2007.
Materials Science and Metallurgical Engineering
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Conference papers on the topic "Ferritic steel corrosion resistant alloys vanadium"

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Koripelli, Rama S., and David N. French. "Issues Related to Creep-Strength-Enhanced Ferritic (CSEF) Steels." In ASME 2014 Power Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/power2014-32027.

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T-91 and P-91 are the oldest of a new class of creep-strength-enhanced ferritic steels (CSEF) approved for use in boilers and pressure vessels. These newer alloys develop high strength through heat treatment, a rapid cooling or quenching to form martensite, followed by a temper to improve ductility. As a result, these alloys offer a much higher allowable stress which means thinner sections provide adequate strength for high-temperature service. Most of the applications thus far have been a substitute for P-22/T-22. The primary advantages of T91 materials over conventional low-alloy steels are: higher allowable stresses for a given temperature, improved oxidation, corrosion, creep and fatigue resistance. T23 is also considered as a member of the family of CSEF steels. The alloying elements such as tungsten, vanadium, boron, titanium and niobium and heat treatment separate this alloy from the well defined T22 steel. Although, T23 is designated for tubing application, its piping counterpart P23 has a strong potential in header applications due to superior strength compared to P22 headers. Now that T-91 and P-91 have been in service for nearly 30 years, some shortcomings have become apparent. A perusal of the allowable stress values for T-91 shows a drop off in tensile strength above about 1150°F. Thus, start-up conditions where superheaters, and especially reheaters, may experience metal temperatures above 1200°F, lead to over-tempering and loss of creep strength. During welding, the temperature varies from above the melting point of the steel to room temperature. The heat-affected zone (HAZ) is defined as the zone next to the fusion line at the edge of the weld metal that has been heated high enough to form austenite, i.e., above the lower critical transformation temperature. On cooling, the austenite transforms to martensite. Next to this region of microstructural transformation, there is an area heated to just below the austenite formation temperature, but above the tempering temperature of the tube/pipe when manufactured. This region has been, in effect, over-tempered by the welding and subsequent post-weld heat treatment (PWHT). Over-tempering softens the tempered martensite with the associated loss of both tensile and creep strength. This region of low strength is subject to failure during service. Creep strength of T91 steel is obtained via a quenching process followed by controlled tempering treatment. Elements such as niobium and vanadium in the steel precipitate at defect sites as carbides; this is known as the ‘pinning effect’. Any subsequent welding/cold working requires a precise PWHT. Inappropriate and/or lack of PWHT can destroy the ‘pinning effect’ resulting in loss of creep strength and premature failures. Several case studies will be presented with the problems associated with T91/T23 materials. Case studies will be presented, with the results of optical microscopy, scanning electron microscopy, hardness measurements and energy dispersive spectroscopy analysis. One case study will discuss how the over-tempering caused a reduced creep strength, resulting in premature creep failure in a finishing superheater tube. A second case presents the carburization of a heat recovery steam generator (HRSG) superheater tube, resulting in reduced corrosion/oxidation resistance. A case study demonstrates how a short-term overheating excursion led to reheat cracking in T23 tubing. Another case will present creep degradation in T91 reheater steel tube due to high temperature exposures (over-tempering).
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Yamamoto, Y., M. P. Brady, G. Muralidharan, B. A. Pint, P. J. Maziasz, D. Shin, B. Shassere, S. S. Babu, and C. H. Kuo. "Development of Creep-Resistant, Alumina-Forming Ferrous Alloys for High-Temperature Structural Use." In ASME 2018 Symposium on Elevated Temperature Application of Materials for Fossil, Nuclear, and Petrochemical Industries. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/etam2018-6727.

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This paper overviews recent advances in developing novel alloy design concepts of creep-resistant, alumina-forming Fe-base alloys, including both ferritic and austenitic steels, for high-temperature structural applications in fossil-fired power generation systems. Protective, external alumina-scales offer improved oxidation resistance compared to chromia-scales in steam-containing environments at elevated temperatures. Alloy design utilizes computational thermodynamic tools with compositional guidelines based on experimental results accumulated in the last decade, along with design and control of the second-phase precipitates to maximize high-temperature strengths. The alloys developed to date, including ferritic (Fe-Cr-Al-Nb-W base) and austenitic (Fe-Cr-Ni-Al-Nb base) alloys, successfully incorporated the balanced properties of steam/water vapor-oxidation and/or ash-corrosion resistance and improved creep strength. Development of cast alumina-forming austenitic (AFA) stainless steel alloys is also in progress with successful improvement of higher temperature capability targeting up to ∼1100°C. Current alloy design approach and developmental efforts with guidance of computational tools were found to be beneficial for further development of the new heat resistant steel alloys for various extreme environments.
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