Pitting corrosion and crevice corrosion behaviors of high nitrogen austenitic stainless steels

Li, Huabing; Jiang, Zhouhua; Yang, Yan; Yang, Changzhu; Zhang, Zu-rui

doi:10.1016/s1674-4799(09)60090-x

Cited by 71 publications

(34 citation statements)

References 18 publications

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“…Conventional 300 series austenitic stainless steels have been widely used in the petroleum and nuclear power industries due to their good corrosion resistance and mechanical properties [1][2][3][4], which are derived from their austenitic structure stabilized by the addition of nickel. However, the cost increase of Ni and its negative effect on the human body have caused the widespread development of high nitrogen austenitic stainless steels (HNS).…”

Section: Introductionmentioning

confidence: 99%

Microstructural evolution and mechanical properties of aging high nitrogen austenitic stainless steels

Jiang

Zhang

et al. 2010

Int J Miner Metall Mater

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The microstructural evolution of 18Cr18Mn2Mo0.77N high nitrogen austenitic stainless steel in aging treatment was investigated by optical microscopy (OM), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The results show that hexagonal intergranular and cellular Cr 2 N with a=0.478 nm and c=0.444 nm and body-centered cubic intermetallic χ phase with a=0.892 nm precipitate gradually in the isothermal aging treatment. The matrix nitrogen depletion due to the intergranular Cr 2 N precipitation induces the decay of Vickers hardness, and the formation of cellular Cr 2 N and χ phase causes the increase in the values. The impact toughness presents a monotonic decrease and SEM morphologies show the leading brittle intergranular fracture. The tensile strength and elongation deteriorate obviously except for the sample aged for 1 h in yield strength. Stress concentration occurs when the matrix dislocations pile up at the precipitation and matrix interfaces, and the interfacial dislocations may become precursors to the misfit dislocations, which can form small cleavage steps and accelerate the formation of cracks.

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Section: Introductionmentioning

confidence: 99%

Microstructural evolution and mechanical properties of aging high nitrogen austenitic stainless steels

Jiang

Zhang

et al. 2010

Int J Miner Metall Mater

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“…The results suggest that the electrical equiva- lent circuit should include two electrical capacitances [10][11][12], which are connected with the structure of the interface of electrode and solution. The bi-layer character of the passive layer was postulated by many researchers [12][13][14]. One of the two electrical capacitances is the capacitance of the electric double layer, and the other is the capacitance of the passive film.…”

Section: Resultsmentioning

confidence: 99%

“…According to the impedance/potential curve of the passive film, it also easily divides the pitting corrosion into two stages: metastable and stable stages. The shapes of the relationship between electric parameters and potential are expected and simple to elucidate on the basis of a film-breaking model [13][14][15]. The fluctuations of the electrical parameters constituting the electrical equivalent circuit may be explained by the stochastic balance between the generation and repassivation of metastable pits.…”

Section: Resultsmentioning

confidence: 99%

Study on pitting process of 316L stainless steel by means of staircase potential electrochemical impedance spectroscopy

Jia

et al. 2011

Int J Miner Metall Mater

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Pitting corrosion of 316L stainless steel in NaCl solution was investigated by means of staircase potential electrochemical impedance spectroscopy (SPEIS). The investigation focused on the transition of stainless steel from the passive state to pitting corrosion. Based on the evolution of electrical parameters of the equivalent electrical circuit, it is suggested that the most probable mechanism of pit creation is the film breaking model. The result demonstrates that staircase potential electrochemical impedance spectroscopy is an effective method for the investigation of pitting corrosion.

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“…The expressions used to calculate PREN for stainless steels and nickel alloys are shown in Eqs. (33) and (34), respectively [202,203]. In both equations the percentages refer to the mass percentages of the alloying elements.…”

Section: Materials Selection Using the Ashby Approachmentioning

confidence: 99%

Corrosion in biomass combustion: A materials selection analysis and its interaction with corrosion mechanisms and mitigation strategies

2013

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Pitting corrosion and crevice corrosion behaviors of high nitrogen austenitic stainless steels

Cited by 71 publications

References 18 publications

Microstructural evolution and mechanical properties of aging high nitrogen austenitic stainless steels

Microstructural evolution and mechanical properties of aging high nitrogen austenitic stainless steels

Study on pitting process of 316L stainless steel by means of staircase potential electrochemical impedance spectroscopy

Corrosion in biomass combustion: A materials selection analysis and its interaction with corrosion mechanisms and mitigation strategies

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