Influence of analysis, heat treatment and structure on susceptibility to intergranular stress corrosion cracking of nickel--chromium--iron alloys (Alloy 800 and Alloy 600)

Book · Sat Jan 01 00:00:00 EST 1972

OSTI ID:4326528

Carlen, J C; Blom, U

From international nuclear industries fair; Basel, Switzerland (16 Oct 1972). Corrosion tests on a variant of Alloy 800 (Sanicro 30) in a modified Strauss solution have shown that the resistance to intergranular corrosion can be improved by a production sequence giving a small grain size and a high degree of stabilization. An investigation has also been performed in contaminated high- pressure water (100 ppM Cl/sup -//8 ppM O/sub 2/) on double U-bends of strip in Sanicro 30 and Alloy 600. This showed, for the inner U-bend in the crevice area, that the depth of intergranular attack depended on the type of low-temperature heat treatment. For Alloy 600 this was true also for the outside surface of the outer U-bend. The results from this investigation do not contradict the theory of a correlation between intergranular corrosion and intergranular stress corrosion cracking. (auth)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-29-027255
• OSTI ID: 4326528
• Resource Relation: Conference: International nuclear industries fair, Basel, Switzerland, 16 Oct 1972; Other Information: Orig. Receipt Date: 30-JUN-74; Related Information: Technical meeting No. 1/7
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

N50200* -Metals
Ceramics
& Other Materials-Metals & Alloys
*CHROMIUM-NICKEL STEELS- INTERGRANULAR CORROSION
*INCOLOY 800- INTERGRANULAR CORROSION
*INCONEL 600- INTERGRANULAR CORROSION
*WATER- CORROSIVE EFFECTS
CHEMICAL COMPOSITION
CHLORINE IONS
CRACKS
GRAIN SIZE
HEAT TREATMENTS
MICROSTRUCTURE
OXYGEN IONS
PRESSURE DEPENDENCE
STABILITY
STRESS CORROSION