Structure and properties of stainless steel alloyed with nitrogen and copper

Капуткина, Л. М.; Prokoshkina, V. G.; Svyazhin, A. G.; Romanovich, D. A.; Kremyanskii, D. V.; Medvedev, M. G.; Nikiforenko, S. V.

doi:10.1007/s11041-009-9160-6

Cited by 6 publications

(7 citation statements)

References 3 publications

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“…Disinfection activity of chromium-nickel steel additionally alloyed by Cu and N was investigated. [41] Test results show (Table 6) that steels with high copper and nitrogen content during direct contact with solution with bacteria exhibit bactericidal activity related to S. aureus and Escherichia coli, and efficiency depends on bacteria concentration. If metal samples are contaminated with S. aureus culture, bacteria number decrease on steel specimens alloyed by copper (5%) is 100% in 24 h and 10.71% on specimen containing 1.5% of copper (Table 7).…”

Section: Total Parametersmentioning

confidence: 99%

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Nitrogen Steels and High‐Nitrogen Steels: Industrial Technologies and Properties

Svyazhin

Капуткина

Smarygina

et al. 2022

steel research int.

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Nitrogen pressure during melting can be a basis for the most general classification of steels alloyed by nitrogen. Nitrogen steels are made under normal pressure, and high‐nitrogen steels are made under pressure, being higher atmospheric in special units. Nitrogen, as well as carbon, strengthens and increases the thermal stability of austenite. The smaller size of the nitrogen ion compared with carbon results in smaller nitrides, lower surface energy and higher strengthening effect, and the ability to increase both the strength and corrosion resistance of austenite. Herein, the mechanisms of the influence of nitrogen on the properties of steel, the thermodynamics and kinetics of alloying with nitrogen, the critical concentration of nitrogen, and the influence of nitrogen on the properties of steels are considered. Examples of nitrogen and high‐nitrogen steels, including weld joints, steels with special properties, such as corrosion‐resistant steels in bioactive environments, bactericidal steel, and steels alloyed by C + N, are given.

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Section: Total Parametersmentioning

confidence: 99%

“…Disinfection activity of chromium–nickel steel additionally alloyed by Cu and N was investigated. [ 41 ]…”

Section: Steels With Specific Propertiesmentioning

confidence: 99%

Nitrogen Steels and High‐Nitrogen Steels: Industrial Technologies and Properties

Svyazhin

Капуткина

Smarygina

et al. 2022

steel research int.

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“…Studies are under way to test the compositions of corrosion-resistant Cr-Mn-Ni steels alloyed together by nitrogen and carbon [25], which significantly expands the γ-region on the equilibrium-phase diagram and improves the properties of steels [26]. It was shown [27] that doping with copper facilitates the passivation of steel and increases its technological plasticity, ensuring the achievement of high strength due to large degrees of deformation [19,28,29].…”

Section: Corrosion Behavior Of Cold-deformed Austenitic Steelsmentioning

confidence: 99%

Local Corrosion of Austenitic Steels and Alloys

Alexandrovich¹,

Anatolievich²

2017

Austenitic Stainless Steels - New Aspects

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The principles of doping of austenitic unstabilized Cr-Ni and Cr-Mn-Ni steels resistant against pitting, slit, and intergranular corrosion (IGC) in weakly and strongly oxidative media are considered. The features of the effect of individual and joint doping with nitrogen, molybdenum, and silicon steels on their resistance to local corrosion have been studied. The ambiguous effect of joint doping with nitrogen and molybdenum of Cr-Mn-Ni steels on their resistance against pitting corrosion is revealed. It has been established that the presence of silicon, in addition to nitrogen and molybdenum, is a prerequisite for eliminating the propensity to the IGC after a long release of chromium-nickel steels. The introduction of silicon into Cr-Ni steel with 0.03% C, with a balanced content of Cr, N, Mo, and Si, equates it with a particularly low-carbon steel containing 0.003% C. Based on the above doping principles, a number of austenitic steels are designed for production equipment that is resistant to local corrosion in chloride-containing media and nitric acid.

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“…In these steels with a reduced nickel content, the required austenite stability is provided by increasing manganese and nitrogen contents. Use of nitrogen as an alloying element has developed comparatively recently and has made it possible to create a number of new metallic materials with a nitrogen content of more than 0.1% [1][2][3][4].A possible version of the solution presented above may be composites containing 0.05-0.1% carbon, 14-15% chromium, 1.0-2.5% nickel, 2.5-4% manganese, about 0.5% silicon, and 0.1-0.2% nitrogen, with additional alloying by niobium. As seen from Fig.…”

mentioning

confidence: 99%

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confidence: 99%

Thermodynamic Development of Austenite-Martensite Class Corrosion-Resistant Steels Intended for a Bimetal Cladding Layer

2016

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Thermodynamic modeling is performed for regions of phase existence in economically alloyed corrosionresistant steels with the aim of determining the possibility of their use as a bimetal wear-resistant cladding layer. Quantitative evaluation is obtained for the form of nitrogen and oxygen present. It is demonstrated that for steels of the type in question introduction of niobium is only effective at the microalloying level. Keywords: corrosion-resistant steels, hot rolling, alloying with nitrogen, alloying with niobium, niobium carbonitride, austenite stabilization, thermodynamic analysis.Rapid development of high-speed railway transport in Russia requires the creation of reliable transport systems based on using fundamentally new materials with a breakthrough in wear and corrosion resistance indices, operating reliability, endurance, mechanical, and other service properties. In particular, these materials should guarantee accident-free and repair-free operation of superstructures in current railway bridges, whose construction provides a deadweight "trough." Layered materials are most promising for use in its manufacture with a main layer of high-strength structural steels and a cladding layer of multifunctional steel, which apart from high strength and corrosion resistance should exhibit good wear resistance and toughness. These specifi cations are satisfi ed by chromium steels of the transitional austenite-martensite class, which surpass other corrosion-resistant steels both with respect to reliability properties due to the presence of austenite within the structure, exhibiting improved toughness, and with respect to wear resistance due to the fact that residual metastable austenite is capable of undergoing deformation-dynamic martensitic transformation, absorbing mechanical energy and strengthening stressed parts. According to GOST 5632−72, the chromium and nickel contents in corrosion-resistant steels of the austenite-martensite class are within the limits 12-18% and 3.7-8%, respectively, and the content of manganese and silicon is not more than 0.8%. This level of alloying determines the quite high cost of these materials, and therefore for the bimetal cladding layer it is important to develop new economically alloyed austenite-martensite steels. In these steels with a reduced nickel content, the required austenite stability is provided by increasing manganese and nitrogen contents. Use of nitrogen as an alloying element has developed comparatively recently and has made it possible to create a number of new metallic materials with a nitrogen content of more than 0.1% [1][2][3][4].A possible version of the solution presented above may be composites containing 0.05-0.1% carbon, 14-15% chromium, 1.0-2.5% nickel, 2.5-4% manganese, about 0.5% silicon, and 0.1-0.2% nitrogen, with additional alloying by niobium. As seen from Fig. 1, the equivalent content of chromium and nickel for these composites is located in a Schaeffl er structure diagram [5] close to the boundary of structures: austenite + martensite/austenit...

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Structure and properties of stainless steel alloyed with nitrogen and copper

Cited by 6 publications

References 3 publications

Nitrogen Steels and High‐Nitrogen Steels: Industrial Technologies and Properties

Nitrogen Steels and High‐Nitrogen Steels: Industrial Technologies and Properties

Local Corrosion of Austenitic Steels and Alloys

Thermodynamic Development of Austenite-Martensite Class Corrosion-Resistant Steels Intended for a Bimetal Cladding Layer

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