Intergranular Stress Corrosion Cracking Damage Model: An Approach and its Development for Alloy 600 in High-Purity Water
Source abstract
Abstract
A logical approach to quantitative modeling of intergranular stress corrosion cracking (IGSCC) is presented. The approach is based on the supposition (supported partly by experimental and field observations, and by a related plausible underlying mechanism) that strain rate is a key variable. The approach is illustrated for the specific case of NiCrFe Alloy 600 in high-purity water. Model parameters are determined based on the constant stress IGSCC data (between 290 and 365 C) assuming a power law relation between the damage and the nominal strain rate. The model may be interpreted in terms of a film rupture mechanism of the corrosion process. The related mechanistic considerations are examined for the specific case. Resulting calculations and stress as well as temperature dependence are shown to be in good agreement with the data. More data are needed for further verification under specific conditions of interest.
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Research context
OpenAlex topics: Hydrogen embrittlement and corrosion behaviors in metals · High Temperature Alloys and Creep · Corrosion Behavior and Inhibition
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
*S. Levy, Inc., 3425 South Bascom Avenue, Campbell, California 95008-7006.
**Electric Power Research Institute, P. O. Box 10412, Palo Alto, California 94303.
References (29)
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