Slow strain rate tests of cold-worked X-52 carbon (C) steel showed stress corrosion cracking (SCC) could be induced in dilute aqueous sulfate solutions at 50°C. The crack growth rate was of the same order of magnitude reported previously for carbonated solutions. Cracking susceptibility increased for potentials more anodic and more cathodic than the corrosion potential (Ecorr) measured in deaerated solution. Transgranular cracking was observed in pH 6.2 solutions and at Ecorr in pH 8 solutions.

Subject
Intergranular stress corrosion cracking, Sodium sulfate, Fracture surfaces, Transgranular stress corrosion cracking, Aqueous solutions, Stress cracking, Mechanical failure, Steel, Carbonate stress corrosion cracking, Cracking, Soil, Corrosion potential, Stress corrosion cracking
Keywords:
bicarbonate, carbon steel, carbonate, cold work, crack growth rate, intergranular cracking, pH, potential, slow strain rate testing, stress corrosion cracking
NACE International
1994
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