Abstract
The coupled-environment fracture model for intergranular stress corrosion cracking of Type 304 stainless steel in boiling water reactor primary (water) heat transport circuits containing relatively pure water has been extended to incorporate the effects of sulphuric acid additions to the coolant and to include thermal activation of the crack tip strain rate. These extensions allow comparisons to be made between theoretically estimated and experimentally determined crack growth rates (CGRs) over a considerable temperature range after calibration at a single temperature. The model predicts, in agreement with experiment, that the CGR passes through a maximum with increasing temperature at a temperature of about 180°C. The temperature dependence of the CGR is attributed to the competing effects of temperature on the thermally activated processes that occur at the crack tip and the properties (including ECP and conductivity) of the external environment.
| Original language | English |
|---|---|
| Pages (from-to) | 1425-1441 |
| Number of pages | 17 |
| Journal | Corrosion Science |
| Volume | 44 |
| Issue number | 7 |
| DOIs | |
| State | Published - Jul 2002 |
Funding
This work was performed whilst the first author was a visiting scientist at the Pennsylvania State University. The first author wishes to thank Prof. Macdonald for hosting him and SCK·CEN for sponsoring the stay. Prof. Macdonald gratefully acknowledges the partial support of the work by the US Department of Energy/Environmental Management Science Program under grant no. DE-FG07-97ER62515.
| Funders | Funder number |
|---|---|
| Not added | DE-FG07-97ER62515 |
ASJC Scopus subject areas
- General Chemistry
- General Chemical Engineering
- General Materials Science