Engineering diagrams and sulphide stress corrosion cracking of duplex stainless steels in deep sour well environment

Barteri, M.; Mancia, F.; Tamba, A.; Montagna, G.

doi:10.1016/0010-938x(87)90112-0

Cited by 20 publications

(8 citation statements)

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“…When T is 300 K, from Eqs. ( 2) and (3) than that in a -Fe. Therefore, when subjected to tensile stress, al arge hydrogen fugacity gradienta ppears at the boundary between a and c phase, leading to hydrogen-induced intergranular stress, then crack initiation and propagation, and rupture eventually(as seen in Fig.…”

Section: Discussionmentioning

confidence: 59%

Effect ofpHand H₂S concentration on sulfide stress corrosion cracking (SSCC) of API 2205 duplex stainless steel

Liu

et al. 2015

International Journal of Materials Research

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Effect of pH and H 2 Sc oncentration on sulfide stress corrosion cracking( SSCC) of API 2205 duplex stainless steelThe role of pH value and H 2 Sconcentration on the sulfide stress corrosion cracking of API 2205d uplex stainless steel was studied by means of slow strain-rate tests, polarization curve measurements and surface analysis. It was found that 2205 duplex stainless steel was highly susceptible to sulfide stress corrosion cracking as pH decreased and H 2 Sc oncentration increased.W hent he pH valuew as 2.8, the susceptibility stayed at al ow level in 500 ppm H 2 Sc oncentration but there existed ac ritical H 2 Sc oncentration between 500 ppm and 1000 ppm, above which the susceptibility rapidly increased.T he sulfide stress corrosion cracking resulted from hydrogen-induced cracking and exhibited the characteristics of hydrogen embrittlement. The boundary of a phase and c phase promoted the initiation of stress corrosion cracking, while c phase inhibited its propagation.R. Liu et al.: Effect of pH and H 2 Sc oncentration on sulfide stress corrosion cracking (SSCC) of API 2205 DSS Int.

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Section: Discussionmentioning

confidence: 59%

Effect ofpHand H₂S concentration on sulfide stress corrosion cracking (SSCC) of API 2205 duplex stainless steel

Liu

et al. 2015

International Journal of Materials Research

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“…The austenite phase has a beneficial effect on preventing HE of DSS in alkaline sulfide solutions, which is similar to the results of work conducted on acidic and neutral pH environments. [15][16][17][18][19][20][21] These findings highlight the likelihood that the EAC observed at higher temperatures 1-10 is likely attributed to an anodic dissolution process in lieu of an absorption mechanism involving hydrogen. Nonetheless, care should be exercised in industrial processes where there is a potential for galvanic coupling of DSS to more active materials in alkaline sulfide solutions.…”

Section: Crmentioning

confidence: 94%

“…The ferritic phase of DSS has been shown to be the preferred site of crack initiation in hydrogen sulfide- [15][16][17][18][19] and chloride-containing 20-21 environments. The hydrogen microprint technology (HMT) was developed by Pérez and Garcia 23 and has been used by several researchers [24][25] to show that hydrogen-trapping sites are predominantly in the austenitic phase and at austenite-ferrite interfaces.…”

Section: Introductionmentioning

confidence: 99%

“…While there has been a modest amount of research on the susceptibility of DSS to HE in acidic, hydrogen sulfide (H 2 S)-containing sour gas [16][17][18][19] and near-neutral, sulfide-containing seawater environments, [20][21] there has been limited work 1 in alkaline sulfide environments. Prior work 22 showed that the threshold concentration of hydrogen required for HE of a 23Cr-5Ni-3Mo DSS in 0.1 M NaOH solution under applied cathodic potential was only a few ppm of hydrogen; therefore, even limited hydrogen activity could promote embrittlement.…”

Section: Introductionmentioning

confidence: 99%

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Hydrogen Embrittlement of a Duplex Stainless Steel in Alkaline Sulfide Solution

Chasse¹,

Singh²

2011

CORROSION

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The hydrogen embrittlement (HE) behavior of UNS S31803 (2205) duplex stainless steel (DSS) was evaluated in alkaline sulfide solution (pH 13.3). The cathodic polarization response was evaluated using standard electrochemical techniques. Microhardness was used to measure the change in hardness upon exposure to the solution at select cathodic potentials. The hydrogen microprint technique (HMT) was used to observe the hydrogen distribution on the sample surface. Slow strain rate testing (SSRT) was conducted to determine HE susceptibility under applied potential in the range from -1,500 mV vs. saturated calomel electrode (SCE) to the corrosion potential (E CORR ). The effect of applied cathodic polarization on the HE susceptibility was assessed as a function of the changes in percent reduction of area (% RA), percent elongation at failure (% el f ), and the time to failure (TTF). The fracture morphology was examined using scanning electron microscopy (SEM) equipped with an energy-dispersive spectrometer (EDS). The results indicate that an increase in the magnitude of the applied cathodic potential enhances the severity of HE below a threshold potential of -1,100 mV SCE . Results show that DSS may become susceptible to HE in alkaline sulfide environments where a high hydrogen fugacity is encountered because of galvanic effects or applied cathodic polarization. KEY WORDS: alkaline sulfide, cathodic polarization, duplex stainless steels, hydrogen embrittlement, slow strain rate testing ISSN 0010-9312 (print), 1938-159X (online) 11/000003/$5.00+$0.50/0 © 2011, NACE International

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“…And the hydrogen-induced cracking and hydrogen embrittlement have long been recognized as a serious problem for the petroleum and petrochemical industries, particularly in high strength steel [1][2][3][4][5]. But researches on hydrogen permeation of steel are mostly in solutions, while less in atmospheric environment.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen permeation behavior and corrosion monitoring of steel in cyclic wet–dry atmospheric environment

Zheng

Huang

Huo

et al. 2007

Materials & Corrosion

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Hydrogen permeation of 16Mn steel under a cyclic wet-dry condition was investigated by Devanathan-Stachurski's electrolytic cell with a membrane covered on the exit side by a nickel layer and the weight loss was measured for each wet-dry cycle. The results show that hydrogen permeation current change with different atmospheric environment: distilled water, seawater, and seawater containing 100 ppm H 2 S. The results show that seawater can induce an increase in the hydrogen permeation current due to the hydrolyzation reaction. And after the increase, equilibrium is reached due to the equilibrium of hydrolyzation reaction effect and the block of the rust layer. On the other hand, H 2 S contamination also can induce an increase in the maximum hydrogen permeation current due to the hydrolyzation reaction. And H 2 S contamination delays the time that hydrogen permeation is detected because of the formation of the FeS (1Àx) film. The FeS (1Àx) film can block the absorption of hydrogen onto the specimen surface. The surface potential change and the pH change of the metal surface control the hydrogen permeation current. And a clear linear correlation exists between the quantities of hydrogen permeated through the 16Mn steel and the weight loss. Based on the linear correlation, we monitored the corrosion rate by monitoring the hydrogen permeation current by a sensor outside. Good coherences were shown between results in laboratory and outside.

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Engineering diagrams and sulphide stress corrosion cracking of duplex stainless steels in deep sour well environment

Cited by 20 publications

References 5 publications

Effect ofpHand H₂S concentration on sulfide stress corrosion cracking (SSCC) of API 2205 duplex stainless steel

Effect ofpHand H₂S concentration on sulfide stress corrosion cracking (SSCC) of API 2205 duplex stainless steel

Hydrogen Embrittlement of a Duplex Stainless Steel in Alkaline Sulfide Solution

Hydrogen permeation behavior and corrosion monitoring of steel in cyclic wet–dry atmospheric environment

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Engineering diagrams and sulphide stress corrosion cracking of duplex stainless steels in deep sour well environment

Cited by 20 publications

References 5 publications

Effect ofpHand H2S concentration on sulfide stress corrosion cracking (SSCC) of API 2205 duplex stainless steel

Effect ofpHand H2S concentration on sulfide stress corrosion cracking (SSCC) of API 2205 duplex stainless steel

Hydrogen Embrittlement of a Duplex Stainless Steel in Alkaline Sulfide Solution

Hydrogen permeation behavior and corrosion monitoring of steel in cyclic wet–dry atmospheric environment

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Effect ofpHand H₂S concentration on sulfide stress corrosion cracking (SSCC) of API 2205 duplex stainless steel

Effect ofpHand H₂S concentration on sulfide stress corrosion cracking (SSCC) of API 2205 duplex stainless steel