| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmentally Assisted Cracking: Theory and Practice
|
| Presentation Title |
Determining Reliability Over Time for Stainless Steels Susceptible to Chloride-induced Stress Corrosion Cracking |
| Author(s) |
Consuelo E. Guzman-Leong, Joseph W. Cluever, Stephen R Gosselin |
| On-Site Speaker (Planned) |
Consuelo E. Guzman-Leong |
| Abstract Scope |
Failure of corrosion-resistant materials due to chloride-induced stress corrosion cracking continues to threaten long-term plant operations and component integrity. A probabilistic model was developed to address degradation of austenitic stainless steel components from chloride-induced SCC in order to help plant owners make guided run, repair, replace, and inspect decisions. Consistent with observations in the literature, the SCC probabilistic model assumes the presence of stress, a corrosive environment, and susceptible material, and further assumes that pitting corrosion is a precursor to SCC. Calculation of the probability of exceeding a wear allowance and through-wall penetration from SCC are performed by calculating the formation and progression to a stable pit, the conditional probability that SCC becomes dominant over pitting, and the crack growth rate as a function of the crack tip stress intensity factor. This paper illustrates the probabilistic model’s sensitivity to key stressors of chloride-induced SCC. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |