Corrosion testing of INCONEL alloy 690 for PWR steam generators
Journal Article
·
· J. Mater. Energy Syst.; (United States)
INCONEL alloy 690, an austenitic, high-chromium modification of INCONEL alloy 600, was developed to resist stress-corrosion cracking and general corrosion in hightemperature aqueous environments associated with nuclear steam generators. Tests in nitric acid and nitric-hydrofluoric acid show that the high chromium content provides alloy 690 with good resistance to highly oxidizing environments over a wide range of high temperatures and oxygen concentrations, in the presence of crevices and lead or chloride contamination. Alloy 690 releases a negligible amount of material when exposed to high-velocity water at elevated temperatures. In constant extension rate tests, alloy 690 resists crack propagation in a deaerated 10 pct solution of sodium hydroxide better than alloy 600. Long-time tests also suggest greater resistance to intergranular attack in deaerated caustic solutions and to the oxidation of radioactive waste disposal involving nitric-hydrofluoric acid dissolution and vitrification.
- Research Organization:
- Huntington Alloys, Inc., Huntington, WV 25720
- OSTI ID:
- 5934447
- Journal Information:
- J. Mater. Energy Syst.; (United States), Journal Name: J. Mater. Energy Syst.; (United States) Vol. 4:3; ISSN JMSMD
- Country of Publication:
- United States
- Language:
- English
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21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210200* -- Power Reactors
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36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
BOILERS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
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CORROSION RESISTANCE
CRACKING
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RADIOACTIVE WASTE DISPOSAL
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STEAM GENERATORS
STRESS CORROSION
TESTING
THERMOCHEMICAL PROCESSES
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WASTE DISPOSAL
WASTE MANAGEMENT
WATER COOLED REACTORS
WATER MODERATED REACTORS
210200* -- Power Reactors
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36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
BOILERS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CORROSION
CORROSION RESISTANCE
CRACKING
DECOMPOSITION
HIGH TEMPERATURE
INCONEL 690
INCONEL ALLOYS
MANAGEMENT
MATERIALS TESTING
NICKEL ALLOYS
NICKEL BASE ALLOYS
OXIDATION
PWR TYPE REACTORS
PYROLYSIS
RADIOACTIVE WASTE DISPOSAL
REACTORS
STEAM GENERATORS
STRESS CORROSION
TESTING
THERMOCHEMICAL PROCESSES
VAPOR GENERATORS
WASTE DISPOSAL
WASTE MANAGEMENT
WATER COOLED REACTORS
WATER MODERATED REACTORS