Influence of specimen type and heat treatment on the caustic stress corrosion cracking of some stainless alloys. [10 and 50 percent NaOH at 600 and 630/sup 0/F]

Conference · Sat May 01 04:00:00 EDT 1976 · Corrosion; (United States)

OSTI ID:7280205

Wilson, I L.W.; Aspden, R G

Stress corrosion tests have been conducted on martensitic, ferritic, and austenitic steels and nickel-base alloys. The tests were conducted on stressed U-bend specimens cut from sheet and tubing and on C-ring specimens cut from tubing. The deoxygenated environments were 10 percent NaOH at 600 and 630/sup 0/F (316 and 332/sup 0/C) and 50 percent NaOH at 600/sup 0/F (316/sup 0/C). The effects of temper embrittlement and sensitization on applicable alloys were studied. It was found that U-bend specimens cracked more readily than C-ring specimens, and that the choice of specimen can affect the relative ranking of some alloys. Temper embrittlement was found to be deleterious to the ferritic alloys, and sensitization was not found to be damaging to the austenite alloys. The results are discussed with reference to stress, alloy composition, and structure.

• Research Organization: Westinghouse Research Labs., Pittsburgh
• OSTI ID: 7280205
• Conference Information: Journal Name: Corrosion; (United States) Journal Volume: 32:5
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALKALI METAL COMPOUNDS
ALLOYS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION
CORROSION RESISTANT ALLOYS
CRACKS
EMBRITTLEMENT
HEAT RESISTING ALLOYS
HYDROGEN COMPOUNDS
HYDROXIDES
INCOLOY 800
INCOLOY ALLOYS
INCONEL 600
INCONEL ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS TESTING
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM ALLOYS
OXYGEN COMPOUNDS
SODIUM COMPOUNDS
SODIUM HYDROXIDES
STAINLESS STEEL-304
STAINLESS STEEL-410
STAINLESS STEELS
STEELS
STRESS CORROSION
TESTING
TUBES