Corrosion resistance of super duplex stainless steels in chloride ion containing environments: investigations by means of a new microelectrochemical method

Perren, Rainer; Suter, Thomas; Uggowitzer, Peter J.; Weber, Ludger; Magdowski, Ruth; Böhni, H.; Speidel, Markus O.

doi:10.1016/s0010-938x(00)00087-1

Cited by 145 publications

(56 citation statements)

References 9 publications

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“…In DSSs, it is important to balance the corrosion resistance of the ¡ and £ phases to reduce the galvanic corrosion effect caused by the difference in the corrosion resistance of the ¡ and £ phases. 28) As the solution-annealing temperature increased, the difference in the PREN values of the ¡ and £ phases increased within the solution-annealing temperature range of 13331413 K, and the higher the solution-annealing temperature, the lower the pitting corrosion resistance of the HDSS samples.…”

Section: Effect Of Solution Annealing Temperature On the Pitting Corrmentioning

confidence: 96%

Effects of Solution-Annealing Temperature on the Precipitation of Secondary Phases and the Associated Pitting Corrosion Resistance in Hyper Duplex Stainless Steel

Jeon

Kim

et al. 2013

Mater. Trans.

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The effects of the solution-annealing temperature on the precipitation of secondary phases and the associated pitting corrosion resistance in hyper duplex stainless steel after aging at 1123 K were investigated in a highly concentrated chloride solution. Increasing the solution annealing temperature from 1333 to 1413 K retarded the formation of the secondary phases owing to a decrease in both the number of preferential precipitation sites such as the ferrite/austenite interface and the activities of Cr, Mo and W. The slow rate of degradation of the pitting corrosion resistance of the alloy with the increase in the solution annealing temperature appears to be caused by the retardation of the precipitation of the sigma phase. Based on the results of the precipitation of secondary phases and electrochemical tests, the optimal solution annealing temperature was determined to be 1373 K.

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Section: Effect Of Solution Annealing Temperature On the Pitting Corrmentioning

confidence: 96%

Effects of Solution-Annealing Temperature on the Precipitation of Secondary Phases and the Associated Pitting Corrosion Resistance in Hyper Duplex Stainless Steel

Jeon

Kim

et al. 2013

Mater. Trans.

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“…Thermodynamic calculations by using ThermoCalc software [3] are commonly used to predict the fraction of equilibrium phases obtained during heat treatment, e.g., annealing. However, short annealing times don't allow the steels to reach the thermodynamic equilibrium, and in this case secondary phases may precipitate in different ways and at different locations [4]. This should be kept in mind when comparing the thermodynamic calculation and the experimental results.…”

Section: Introductionmentioning

confidence: 99%

Study of corrosion behavior of a 22% Cr duplex stainless steel: Influence of nano-sized chromium nitrides and exposure temperature

Bettini

Kivisäkk

Leygraf

et al. 2013

Electrochimica Acta

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PostprintThis is the accepted version of a paper published in Electrochimica Acta. This paper has been peerreviewed but does not include the final publisher proof-corrections or journal pagination.Citation for the original published paper (version of record):Bettini, E., Kivisäkk, U., Leygraf, C., Pan, J. [Year unknown!] Study of corrosion behavior of a 22% Cr duplex stainless steel: influence of nano-sized chromium nitrides and exposure temperature. Electrochimica ActaAccess to the published version may require subscription. AbstractChromium nitrides may precipitate in duplex stainless steels during processing and their influence on the corrosion behavior is of great importance for the steel performance. In this study, the influence of nanosized quenched-in chromium nitrides on the corrosion behavior of a heat treated 2205 duplex stainless steel was investigated at room temperature and 50 °C (just above critical pitting temperature). The microstructure was characterized by SEM/EDS and AFM analyses, and quenched-in nitrides precipitated in the ferrite phase were identified by TEM analysis. Volta potential mapping at room temperature suggests lower relative nobility of the ferrite matrix. Electrochemical polarization and in-situ AFM measurements in 1 M NaCl solution at room temperature show a passive behavior of the steel despite the presence of the quenched-in nitrides in the ferrite phase, and preferential dissolution of ferrite phase occurred only at transpassive conditions. At 50 °C, selective dissolution of the austenite phase was observed, while the ferrite phase with the quenched-in nitrides remained to be stable. It can be concluded that the finely dispersed quenched-in nitrides do not cause localized corrosion, whereas the exposure temperature has a strong influence on the corrosion behavior of the duplex stainless steel.

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“…5. The numerous, descriptive literature presents corrosion problems solved based on potentiostatic studies [34][35][36][37]. This approach to the problem facilitates its analysis and documentation of the process, but requires adaptation before applying the results in industrial practice.…”

Section: Resultsmentioning

confidence: 99%

Corrosion of 1.4110 stainless steel at nitrate acid at 323 K

Kruszewski

Lipiński

2018

Engineering for Rural Development

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Abstract. Corrosion is a common process of destroying construction materials. The material during these processes loses its properties, it causes deterioration of functions, loses its usefulness, applicability. One of the important aggressive environments in the agricultural industry is nitrogen, from which nitric acid may be formed. Due to high hardness and also a good resistance to abrasion and corrosion the 1.4110 steel is commonly used in industry as knife blades, machining tools, measuring tools, pump construction, valves. Stainless steel is steel with good resistance to homogeneous or local environmental attack. The aim of the research was to determine the corrosive wear of 1.4110 steel (X55Cr), corrosion resistance with martensitic microstructure using the Huey test. The tested steel contains 0.52 % C, 13.4 % Cr and 0.65 % Mo. The samples were weighed before start of the corrosion processes and after them. Samples were kept in nitric acid 65 % at temperature 323K. The holding times of the samples in nitric acid were 48, 96, 144, 192, 240, 288, 336, 384 hours. The percentage of mass losses was determined by the weight method. Each sample was examined metallographically using an optical microscope and the surface roughness test using a profilometer. The test results were analyzed in order to determine the corrosion rate of steel in mm/year and g/m2 as well as percentage mass loss and determine the corrosion resistance in this environment. After corrosion of the steel, the roughness has increased. Mass loss and corrosion velocity were presented by a linear function, but greater accuracy is obtained by using the 3rd degree polynomial. Then it was confirmed that as the holding time in boiling nitric acid increases, corrosive wear increases. Generally, the tested steel 1.4110 has a good corrosion resistance in the nitricacid environment.Keywords: steel, stainless steel, corrosion, corrosion rate, roughness. IntroductionIn technics corrosion mainly concerns metal materials and within them also iron alloys. Stainless steel is steel with good resistance to homogeneous or local environmental attack. Corrosion-resistant steels created have resistance only in specific conditions [1][2][3][4][5][6][7]. Their corrosion resistance depends i.a. on the chemical ingredients, microstructure, surface condition. Corrosion-resistant steels have at least 10.5 % chromium and a maximum of 1.2 % carbon, elements that conduce to forming of the surface layer (passive), with dense structure and consistent with the base, causing a jump of the chemical potential, it has a tendency to self-rebuilding and provides corrosion resistance. Along with the increasing content of the chromium, nickel, molybdenum the corrosion resistance is gaining. Corrosion is a phenomenon of material damage as a result of the chemical and electrochemical environment influence [8][9][10][11][12].In alloys and metals changes occur as a result of interaction with the surrounding environment. The corrosion process begins at the point of contact with the environme...

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Corrosion resistance of super duplex stainless steels in chloride ion containing environments: investigations by means of a new microelectrochemical method

Cited by 145 publications

References 9 publications

Effects of Solution-Annealing Temperature on the Precipitation of Secondary Phases and the Associated Pitting Corrosion Resistance in Hyper Duplex Stainless Steel

Effects of Solution-Annealing Temperature on the Precipitation of Secondary Phases and the Associated Pitting Corrosion Resistance in Hyper Duplex Stainless Steel

Study of corrosion behavior of a 22% Cr duplex stainless steel: Influence of nano-sized chromium nitrides and exposure temperature

Corrosion of 1.4110 stainless steel at nitrate acid at 323 K

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