Stress Corrosion Cracking Regions on Contour Maps of Dissolution Rates for AISI 304 Stainless Steel in Sulfuric Acid Solutions with Chloride, Bromide, or Iodide

Abstract The susceptibility of sensitized AISI 304 stainless steel (SS) to intergranular stress corrosion cracking (IGSCC) was studied in 0.01 M Na2SO4 solution at temperatures ranging from 100 to 250 C under constant load conditions. The susceptibility increased in the middle of the passive potential at 150 and 175 C and in the transpassive potential at 200 and 250 C. IGSCC nucleated from the crevice corrosion (CC) around a pinhole of a flat tensile specimen occurred over a wide range of potentials at 100 C and in the transpassive potential range at temperatures ranging from 125 to 175 C. IGSCC was significantly accelerated by an artificial crevice. The susceptibility was discussed from the nature of (1) the passive film and (2) environmental solution.

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ChemInform Abstract: STRESS CORROSION CRACKING OF TYPE AISI 304 STAINLESS STEEL AT ROOM TEMPERATURE. INFLUENCE OF CHLORIDE CONTENT AND ACIDITY

Chemischer Informationsdienst ◽

10.1002/chin.198043019 ◽

1980 ◽

Vol 11 (43) ◽

Author(s):

S. TORCHIO

Keyword(s):

Stainless Steel ◽

Stress Corrosion ◽

Stress Corrosion Cracking ◽

Room Temperature ◽

Chloride Content ◽

304 Stainless Steel ◽

Temperature Influence ◽

Aisi 304 Stainless Steel ◽

Aisi 304 ◽

Type Aisi

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Effects of H2 Additions on Stress Corrosion Cracking in a Boiling Water Reactor

CORROSION ◽

10.5006/1.3581964 ◽

1985 ◽

Vol 41 (1) ◽

pp. 19-30 ◽

Cited By ~ 16

Author(s):

M. E. Indig ◽

J. E. Weber

Keyword(s):

Stainless Steel ◽

Stress Corrosion ◽

Stress Corrosion Cracking ◽

Pressure Vessel ◽

Corrosion Cracking ◽

304 Stainless Steel ◽

Pressure Vessel Steel ◽

Aisi 304 Stainless Steel ◽

Vessel Steel ◽

Aisi 304

Abstract Controlled amounts of hydrogen were injected into the Dresden-2 boiling water reactor (BWR) during a five week period. The effect of the hydrogen modifed water chemistry on major structural alloys used in the BWR system was studied. The studies were conducted in a test facility consisting of two 1 L vessels which were piped to receive reactor water from the discharge side of the main recirculation pump. One of the vessels was used to measure electrochemical potentials. The second vessel was used to perform slow strain rate stress corrosion cracking tests. Electrochemical measurements were conducted continuously during normal BWR operation and during periods of hydrogen injection. The hydrogen injection caused the quantity of dissolved oxygen to decrease, which resulted in a substantial drop in corrosion potentials. At the highest injection rate, the corrosion potential of AISI 304 stainless steel dropped below the potential at which intergranular stress corrosion cracking (IGSCC) could be expected. Stress corrosion tests were conducted on severely sensitized AISI 304 stainless steel and pressure vessel steel. During normal operation, the stainless steel failed primarily by IGSCC. During H2 injection when the water contained <20 ppm O2, both IGSCC of the stainless steel and transgranular SCC of pressure vessel steel were eliminated.

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