Prediction of environmentally assisted crack growth in a large diameter stainless steel pipe
- General Electric Nuclear Energy, San Jose, CA (United States)
- General Electric Corporate Research & Development, Schenectady, NY (United States)
- Electric Power Research Institute, Palo Alto, CA (United States)
Analytical models are being used to predict intergranular stress corrosion crack growth (IGSCC) in austenitic components. An important feature of these models is the ability to separately consider the effect of key material and water chemistry parameters, such as sensitization, conductivity, and electrochemical potential (ECP). The validation of these models has been based primarily on comparison with small specimen data, such as compact tension tests under sustained loading. Before the models can be used to predict crack growth in power plant piping, it is necessary to benchmark the analysis with experimental data on stress corrosion cracks in piping welds with loading similar to that expected in an operating plant. This paper describes the results from testing a 10-inch diameter stainless steel pipe having real and simulated cracks in the weld heat affected zone (HAZ).
- OSTI ID:
- 48067
- Report Number(s):
- CONF-910808--; CNN: Contract RP2006-17
- Country of Publication:
- United States
- Language:
- English
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