Microelectrochemical corrosion study of super martensitic welds in chloride-containing media

Pereda, M.D.; Gervasi, C.A.; Llorente, C.; Bilmes, Pablo David

doi:10.1016/j.corsci.2011.07.040

Cited by 46 publications

(25 citation statements)

References 30 publications

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“…Mechanical property values for SMSS are typically within the following ranges: 25–32 HRC (265–320 HV) for hardness, 650–750 MPa for yield strength (0.2%), 880–950 MPa for tensile strength, elongations at rupture of up to 20%, and impact energy of up to 150 J. In a marine environment, pitting potential values are in the range of 0.180 to 0.300 V …”

Section: Introductionmentioning

confidence: 99%

Effect of titanium nitride (TiN) on the corrosion behavior of a supermartensitic stainless steel

Rodrigues

Bandeira

Duarte

et al. 2018

Materials & Corrosion

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This study evaluates the effect of high N, Ni, and Ti contents on the microstructure and corrosion properties of a supermartensitic stainless steel when immersed in a 3.5% NaCl solution. Tempering procedure at several temperatures resulted in a martensitic microstructure composed of grains ranging from 60 to 70 μm, TiN microparticles, and austenite. The sample treated at 610 °C showed better corrosion resistance due to the lower current density of the anodic polarization curve and less negative pitting potential, which was thoroughly influenced by the content of austenite (6.2 vol%). Anodic curves presented current fluctuation attributed to the presence of passive film instability, due to micro‐galvanic corrosion between TiN particles and matrix. Impedance analysis on the sample tempered at 610 °C confirmed that 6.2 vol% of austenite assists the protective film by making it thicker and more protective in chloride media.

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Section: Introductionmentioning

confidence: 99%

Effect of titanium nitride (TiN) on the corrosion behavior of a supermartensitic stainless steel

Rodrigues

Bandeira

Duarte

et al. 2018

Materials & Corrosion

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“…Pereda et al 6 studied the corrosion resistance of SMSS 13%Cr steel welded with submerged arc welding (SAW) with similar feed metal, but Ni and Mo overmatched. Welding procedure did not include pre-heating neither PWHT.…”

Section: Introductionmentioning

confidence: 99%

Effects of post weld heat treatments on the microstructure and mechanical properties of dissimilar weld of supermartensític stainless steel

et al. 2014

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“…Este potencial de início das medidas foi definido como o potencial de corrosão (Ecorr). As curvas de polarização anódica foram feitas com [10]. Os locais preferenciais de nucleação e a morfologia dos pites após os ensaios de polarização foram observadas por MEV.…”

Section: Materiais E Métodosunclassified

Microestrutura e resistência à corrosão de aços inoxidáveis supermartensíticos soldados por fricção radial

et al. 2014

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Resumo Neste trabalho, tubos de aço inoxidável supermartensítico (AISM) foram soldados por fricção radial (SFR) e suas propriedades de corrosão foram estudadas através de ensaios de polarização anódica em solução de 3,5 % de NaCl e da técnica eletroquímica de reativação potenciocinética de ciclo duplo (DL-EPR Palavras-chave: Aço inoxidável, Soldagem por fricção radial, Microestrutura, Corrosão, Técnicas eletroquímicas. Abstract: In this work, supermartensitic stainless steel pipes were radial friction (RF) welded and their corrosion behavior were studied based on potentiodynamic polarization and double loop -electrochemical potentiokinetic reactivation (DL-EPR) tests. Measurements were performed on samples taken from the base metal (BM), weld interface, and consumable ring (CR

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Microelectrochemical corrosion study of super martensitic welds in chloride-containing media

Cited by 46 publications

References 30 publications

Effect of titanium nitride (TiN) on the corrosion behavior of a supermartensitic stainless steel

Effect of titanium nitride (TiN) on the corrosion behavior of a supermartensitic stainless steel

Effects of post weld heat treatments on the microstructure and mechanical properties of dissimilar weld of supermartensític stainless steel

Microestrutura e resistência à corrosão de aços inoxidáveis supermartensíticos soldados por fricção radial

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