This paper summarizes the results of research, funded by the Canadian Energy Pipeline Association (CEPA), to determine whether the initiation of near-neutral pH stress corrosion cracking (SCC) could be correlated with pipe metallurgical factors. The factors considered included residual stress, surface roughness, chemical composition, cyclic stress-strain behavior, inclusion properties (number, area, and composition), microhardness, and local galvanic behavior. The project focused on pipes installed from the 1950s through 1970s that exhibit near-neutral-pH SCC. Fourteen pipe samples were examined, ranging in diameter from 8 to 42 inches and grades from X52 to X70.
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Materials Factors Influencing the Initiation of Near-Neutral pH SCC on Underground Pipelines
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Beavers, JA, Johnson, JT, & Sutherby, RL. "Materials Factors Influencing the Initiation of Near-Neutral pH SCC on Underground Pipelines." Proceedings of the 2000 3rd International Pipeline Conference. Volume 2: Integrity and Corrosion; Offshore Issues; Pipeline Automation and Measurement; Rotating Equipment. Calgary, Alberta, Canada. October 1–5, 2000. V002T06A041. ASME. https://doi.org/10.1115/IPC2000-221
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