A Review of Factors Affecting SCC Initiation and Propagation in Pipeline Carbon Steels

Pipelines have been installed and operated around the globe to transport oil gas for decades. They are considered be an effective, economic safe means of transportation. The major concern in their operation is corrosion. Among different forms corrosion, stress corrosion cracking (SCC), which caused by stresses induced internal fluid flow or other external forces during pipeline’s operation, combined action with presence a corrosive medium, can lead pipeline failure. In this paper, extensive review factors affecting SCC steels various environmental conditions carried out understand impact. Several such as temperature, oxidizers (O2, CO2, H2S, etc.), composition concentration pH, applied stress, microstructure metal/alloy established affect steels. susceptibility steel at particular temperature strongly depends on type medium microstructure. It was observed that water quenched tempered heat treatments, those consist acicular ferrite bainitic grains, more susceptible irrespective solution composition. Applied fluctuating facilitates initiation propagation. general, mechanisms crack propagation near-neutral solutions anodic dissolution hydrogen embrittlement.