Effect of cold work on the growth rates of stress corrosion cracks in structural materials of nuclear systems

Conference · Tue Oct 01 00:00:00 EDT 1996

OSTI ID:367717

Magdowski, R; Speidel, M O ^[1]

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1. Swiss Federal Inst. of Tech., Zurich (Switzerland). Inst. of Metallurgy

The growth rates of stress corrosion cracks in austenitic stainless steels and nickel base alloy 600 exposed to simulated boiling water reactor coolant were measured by fracture mechanics testing techniques. Cold work may increase the crack growth rates up to one hundred times. In both, the annealed condition and the cold worked condition, the stress corrosion crack growth rates are independent of stress intensity over a wide K-range and crack growth rates correlate well with yield strength and hardness. In the annealed condition the fracture path is intergranular, but higher degrees of cold work introduce higher proportions of transgranular stress corrosion cracking.

• OSTI ID: 367717
• Report Number(s): CONF-960389-; TRN: IM9640%%463
• Resource Relation: Conference: National Association of Corrosion Engineers (NACE) annual corrosion conference and exposition: water and waste water industries, Denver, CO (United States), 24-29 Mar 1996; Other Information: PBD: 1996; Related Information: Is Part Of Corrosion/96 conference papers; PB: [6615] p.
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
21 NUCLEAR POWER REACTORS AND ASSOCIATED PLANTS
BWR TYPE REACTORS
REACTOR MATERIALS
AUSTENITIC STEELS
STRESS CORROSION
CRACK PROPAGATION
INCONEL 600
ANNEALING
COLD WORKING
MECHANICAL PROPERTIES