Study of the IGA/SCC behavior of Alloy 600 and 690 in high temperature solutions
- Tokyo Univ. (Japan). Faculty of Engineering
- Japan Power Engineering and Inspection Corp., Tokyo (Japan)
- Mitsubishi Heavy Industries, Ltd., Takasago (Japan). Takasago R and D Center
- Mitsubishi Heavy Industries, Ltd., Kobe (Japan). Kobe Shipyard and Machinary Works
IGA/SCC of Alloy 600 steam generator (SG) tubes in the secondary side has been recognized as a matter of great concern for PWRs. IGA/SCC behavior of Alloy 600 and 690 in high temperature solutions were studied using CERT method under potentiostatic conditions. The IGA/SCC susceptible regions were investigated as the function of pH and electrode potential. To understand the cause of IGA/SCC, the electrochemical measurements and surface film analysis were also performed in acidic and alkaline solutions. To verify the results of CERT test, the long term model boiler tests were also carried out. Thermally treated Alloy 690 showed higher IGA/SCC resistance than Alloy 600 under both acid and alkaline conditions.
- OSTI ID:
- 99561
- Report Number(s):
- CONF-950304-; TRN: 95:019172
- Resource Relation:
- Conference: Corrosion `95: National Association of Corrosion Engineers (NACE) international annual conference and corrosion show, Orlando, FL (United States), 26-31 Mar 1995; Other Information: PBD: 1995; Related Information: Is Part Of Corrosion/95 conference papers; PB: 5788 p.
- Country of Publication:
- United States
- Language:
- English
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