Fig. 1: SCC test outcomes for DSS alloys as a function of H2S partial pressure and Cl− concentrations. | npj Materials Degradation

Fig. 1: SCC test outcomes for DSS alloys as a function of H2S partial pressure and Cl− concentrations.

From: Predicting stress corrosion cracking in downhole environments: a Bayesian network approach for duplex stainless steels

Fig. 1

a Standard DSS: Positive SCC instances are marked by red circles, while negative instances are blue circles. b Super DSS: Red diamonds indicate SCC occurrence, and blue diamonds signify no SCC. The dashed lines in both plots represent the safe operating limits for pH2S (i.e., 0.02 and 0.2 bar) for DSS alloys according to ISO 15156-3 standard31. The data points encompass a wide range of experimental parameters, including temperatures (25–200 °C), pH (2.7–5.4), CO2 partial pressure (pCO₂ ≤ 92 bar), and tensile stresses (30–160% \({\sigma }_{{YS}}\)).

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