Abstract
Laboratory evaluation of environmental assisted cracking (EAC) of metals induced by absorbed hydrogen atoms requires careful consideration because of the dependence of hydrogen uptake and transport on environment composition and temperature, and the need to reconcile the timescalefor hydrogen ingress with short term testing. Hydrogen permeation measurements in relevant environmental conditions can provide key information with respect to hydrogen diffusivity, concentration, and trapping parameters. Using data for three alloy types commonly used in the oil and gas industry, namely duplex stainless steel, 13Cr martensitic stainless steel, and low alloy carbon steel, examples are given of the application of such data in providing guidance in EAC testing and in interpreting the results.
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