Hydrogen embrittlement of type 410 stainless steel in sodium chloride, sodium sulfate, and sodium hydroxide environments at 90 C

Journal Article · Sun Jun 01 00:00:00 EDT 1997 · Corrosion

DOI:https://doi.org/10.5006/1.3280493· OSTI ID:495448

Gonzalez-Rodriguez, J G; Salinas-Bravo, V M ^[1]; Martinez-Villafane, A ^[2]

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1. Inst. de Investigaciones Electricas, Cuernavaca (Mexico). Dept. Fisico Quimica Aplicada
2. Centro de Investigaciones en Materiales Avanzados Leon Tolstoi, Chihuahua (Mexico)

Susceptibility of martensitic type 410 (UNS S41000) stainless steel (SS) to environmental cracking was evaluated at 90 C in concentrated sodium chloride, sodium sulfate and sodium hydroxide solutions, all of which are environments related to steam turbine conditions, using the slow strain rate testing (SSRT) technique. In NaCl, the effects of solution pH, concentration, and anodic and cathodic polarization were investigated. Tests were supplemented by detailed electron fractography and hydrogen permeation measurements. A clear correlation was found between the degree of embrittlement and the amount of hydrogen permeating the steel, suggesting a hydrogen-induced cracking mechanism.

• Sponsoring Organization: USDOE
• OSTI ID: 495448
• Journal Information: Corrosion, Vol. 53, Issue 6; Other Information: PBD: Jun 1997
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
STAINLESS STEEL-410
HYDROGEN EMBRITTLEMENT
SODIUM CHLORIDES
SODIUM SULFATES
SODIUM HYDROXIDES
CORROSIVE EFFECTS
STEAM TURBINES
WATER CHEMISTRY