Intergranular attack of Alloy 600 in pressurized water reactor steam generator tubes
Journal Article
·
· Mater. Performance; (United States)
OSTI ID:6523145
In some steam generators, intergranular attack (IGA) has been detected on Alloy 600 tubes within or near the tubesheet crevice region. A study was undertaken to reproduce IGA in an experimental device simulating steam generator conditions. Chemical parameters and test procedures were adjusted to obtain a high concentration of alkalies in the tubesheet crevices and a representative corrosion attack of tubing materials. Millannealed (MA) Alloy 600 was the most susceptible to IGA, but a thermal treatment at 700 C decreased the amount of IGA. The least vulnerable material was an experimental MA alloy 690.
- Research Organization:
- Commissariat a l'Energie Atomique (CEA), Laboratoire d'Essais Technologiques de Corrosion, BP 270, 50107 Cherbourg
- OSTI ID:
- 6523145
- Journal Information:
- Mater. Performance; (United States), Journal Name: Mater. Performance; (United States) Vol. 26:3; ISSN MTPFB
- Country of Publication:
- United States
- Language:
- English
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