Influence of thermal treatment on the SCC behavior of inconel alloy 600 at controlled potentials in 10% caustic soda solutions at 315 C
Journal Article
·
· Corrosion; (United States)
Electrochemically controlled test methods have been used to determine the influence of thermal treatment on the stress corrosion (SCC) resistance of inconel alloy 600 (I-600) in deaerated 10% NaOH solutions at 315 C (600 F). Maximum susceptibility to SCC was observed when the electrode potential of the I-600 was held in the potential range corresponding to the active-passive transition region of the anodic polarization curve. In the most susceptible potential range, the crack growth rate was approximately 20 times greater in mill annealed I-600 than in similar material thermally treated at 705 C (1300 F) for 24 hours. The improved resistance to SCC propagation could be correlated with the pressure of a semicontinuous grain boundary carbide precipitate and/or segregation of phosphorus to the grain boundaries.
- Research Organization:
- Westinghouse Research and Development Center, Pittsburgh, PA
- OSTI ID:
- 6430672
- Journal Information:
- Corrosion; (United States), Journal Name: Corrosion; (United States) Vol. 35:3; ISSN CORRA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Microstructural aspects of the thermal treatment of Inconel Alloy 600
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Journal Article
·
Thu Jan 31 23:00:00 EST 1980
· Metallography; (United States)
·
OSTI ID:5409684
Review of the stress corrosion cracking of Inconel 600
Conference
·
Mon Sep 01 00:00:00 EDT 1975
· Corrosion, v. 31, no. 9, pp. 327-337
·
OSTI ID:4165762
Surface and grain boundary segregation, stress corrosion cracking, and corrosion fatigue of Inconel 600
Technical Report
·
Thu Feb 28 23:00:00 EST 1985
·
OSTI ID:5701885
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