Materials Factors Influencing the Initiation of Near-Neutral pH SCC on Underground Pipelines

Abstract

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.

Original document

The different versions of the original document can be found in:

• http://proceedings.asmedigitalcollection.asme.org/data/conferences/asmep/89938/v002t06a041-ipc2000-221.pdf

• http://asmedigitalcollection.asme.org/IPC/proceedings-pdf/doi/10.1115/IPC2000-221/2507801/v002t06a041-ipc2000-221.pdf,

http://dx.doi.org/10.1115/ipc2000-221

• https://asmedigitalcollection.asme.org/IPC/proceedings/IPC2000/40252/V002T06A041/266161,

https://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=2572496,

https://academic.microsoft.com/#/detail/2539111972