The primary goal of the reported work was to develop an understanding of the effects of the various chemical species found beneath a coating on the SCC behavior of the pipeline steel. To study the effects of various water contaminants on crack growth rate, a unique crack tip injection methodology was used. This technique uses a micrometering pump to place the contaminants of interest into the tip of a growing crack in a fracture mechanics specimen. The methodology demonstrated that sulfide in the crack tip accelerated the rate of cracking by a factor of twenty compared to rates in air. Results of the tests and fractographic investigation are included in the appendixes.
Further research is recommended.
You must be a registered user to purchase this document. Register Now Purchase this Document Hard Copy - Quantity Check this box to purchase a hard copy. Some older reports may take 1-2 weeks. View Document Check this box to purchase on-line version. On completion of your order you will have immediate access to the document for one year from purchase date.