Corrosion behavior of radial friction welded supermartensitic stainless steel pipes

Rovere, Carlos Alberto Della; Aquino, José M.; Ribeiro, Celso Roberto; Silva, R.; Alcântara, N.G.; Kuri, S.E.

doi:10.1016/j.matdes.2014.09.003

Cited by 24 publications

(7 citation statements)

References 36 publications

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“…To date, there is a lack of studies in the technical literature concerning the effect of thermochemical treatments on the electrochemical properties of SMSS's. Most of the corrosion related work concentrates in studying the performance of SMSS weldments 6,7 and the influence of alloying additions [9][10][11] , for example.…”

Section: Discussionmentioning

confidence: 99%

“…To date the SMSS's have found application as alternative materials for multipurpose use in the oil and gas industry as a substitute of the super-duplex grades 1,5 . Several papers in the literature are dedicated to the metallurgy and heat treatment of the SMSS's 5 , welding 6,7 and also to the corrosion behavior in different media 8 . The effect of different alloying elements has been studied as well [9][10][11] .…”

Section: Introductionmentioning

confidence: 99%

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Corrosion Behavior of Plasma Nitrided and Nitrocarburised Supermartensitic Stainless Steel

et al. 2018

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Supermartensitic stainles steels (SMSS's) are a new generation of martensitic steels that have been increasingly used in oil and gas applications due to their adequate corrosion resistance and mechanical properties. In the present study, SMSS specimens (UNS S41425) were solution heat treated and air cooled followed by plasma nitriding and nitrocarburising at 400, 450 and 500°C for 5h. The produced layers were characterized by optical microscopy, microhardness testing, X-ray diffraction and corrosion testing in NaCl 3.5% solution. Surface alloying with nitrogen or both nitrogen and carbon results in increased surface hardness and homogeneous layers in which layer thickness increases with temperature. However, plasma nitriding yields a slightly thicker case than nitrocarburising. X-ray diffraction indicates very broad and overlapped peaks for the treatments conducted at 400°C. Increasing treatment temperature appears to result in the formation of chromium nitrides and iron nitrides and carbides, depending on the treatment. It was also found that treatment temperature drastically affects the corrosion response of the steel. The untreated steel presented a pitting potential close to 250mV. Plasma nitriding at 400°C was the only condition in which significant improvement of corrosion is observed. For plasma nitriding and nitrocarburising at 450 and 500°C, some pitting was detected.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Corrosion Behavior of Plasma Nitrided and Nitrocarburised Supermartensitic Stainless Steel

et al. 2018

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“…The electrolyte was 0.5 M H 2 SO 4 + 0.01 M KSCN [21] and the test temperature was 30°C ± 1. The three stages of the test were: (i) a 5 min delay at VOC; (ii) an anodic polarization scan from 50 mV below VOC to 300 mV(SCE) in the passive range at a scan rate of 100 mV/min; and (iii) a cathodic reactivation scan from 300 mV(SCE) to 50 mV below VOC at the same scan rate.…”

Section: Dlepr Test Performancementioning

confidence: 99%

Study of influence of gamma prime and eta phases on corrosion behaviour of A286 superalloy by using electrochemical potentiokinetic techniques

2015

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“…These curves were superimposed to facilitate their comparison. The E P was taken as the potential at which a sudden sharp rise in current density occurred and the value of 100 µA/cm 2 was exceeded 25,26 .…”

Section: Resultsmentioning

confidence: 99%

Effect of Cooling Rate on the Corrosion Behavior of As-Cast SAF 2205 Duplex Stainless Steel after Solution Annealing Treatment

Cronemberger

Nakamatsu

Mariano

et al. 2016

MSF

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The formation of intermetallic phases alters the properties of duplex stainless steel and is therefore a crucial factor in its performance. For example, the formation of sigma phase in duplex steel increases its brittleness and decreases its corrosion resistance because this phase consumes chromium and molybdenum in solid solution, thus leading to the depletion of these elements in the matrix. This study investigated the corrosion resistance of as-cast SAF 2205 duplex stainless steel after solution annealing treatment at 1100 °C for 240 minutes, under varying cooling rates. The objective was to evaluate the correlation between cooling condition, microstructural changes and corrosion resistance based on cyclic potentiodynamic polarization tests and double loop electrochemical potentiokinetic reactivation (DL-EPR) measurements. The results revealed a significant reduction in the corrosion resistance of a slowly cooled sample, which presented an increase in the degree of Cr (Qr / Qa) depletion resulting from the formation of sigma phase.

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Corrosion behavior of radial friction welded supermartensitic stainless steel pipes

Cited by 24 publications

References 36 publications

Corrosion Behavior of Plasma Nitrided and Nitrocarburised Supermartensitic Stainless Steel

Corrosion Behavior of Plasma Nitrided and Nitrocarburised Supermartensitic Stainless Steel

Study of influence of gamma prime and eta phases on corrosion behaviour of A286 superalloy by using electrochemical potentiokinetic techniques

Effect of Cooling Rate on the Corrosion Behavior of As-Cast SAF 2205 Duplex Stainless Steel after Solution Annealing Treatment

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