Considerations in Using Laboratory Test Data as an Indicator of Field Performance: Stress Corrosion Cracking

Abstract

Correlations between laboratory stress corrosion test data and field performance and data are done for the express purpose of demonstrating the validity of the laboratory data for use in component design and performance. Improved component performance and life-prediction is the primary goal of developing correlations between the laboratory and field performance. It is not sufficient to merely obtain data from a standard test and assume this will suffice. The purpose of this paper is to summarize the role of standardized tests, specialized tests, full-size component tests, the impact of the quality of field data, inability to match field conditions in the laboratory, and role of modeling in developing a high confidence laboratory-field correlation.

Hydrogen Accumulation and Distribution in Pipeline Steel in Intensified Corrosion Conditions

“…The group of these steels demonstrates resistance to sulfide stress corrosion cracking (SSCC) and is recommended for the use with acid gases. At the same time, there is sufficient data on the susceptibility of these steels to stress corrosion cracking [6,7,8,9], which in some cases is also explained by hydrogen damage. Hydrogen-induced cracking (HIC) test results demonstrate that high-strength steels are most susceptible to it, and in the series of X52, X60, X70, and 100XF steels, the latter is most vulnerable.…”

“…This results in reduction in the atomic binding energy of the crystal lattice. This SCC mechanism is observed in Canada, Italy and some regions of Russia and other countries [7,8,9]. …”

“…In this case, primary dissolution and decrease in cohesive energy of the grain boundary inclusions are observed. This SCC mechanism occurs in Australia, Argentina, Iran, Saudi Arabia, the United States, and also in regions of Central Asia and Kazakhstan [7,8,9]. In Russia this mechanism is not observed.…”

Simple method for apodization of fibre Bragg gratings written by a Gaussian beam

“…Although SCC was first observed nearly 100 years ago [1], the mechanisms by which it operates are still under dispute. In the case of Ni-based alloys, such as alloys 600 and 690, three basic mechanisms have been postulated.…”