CORROSION · 1977 · 59 citations · 11 references
Natural SciencesMaterials EngineeringMaterials ScienceCorrosion ScienceMechanical Behavior Of MaterialsMetallurgyCorrosion EngineeringCorrosion Of SteelsFracture MechanicsFracture ToughnessStainless SteelsStress Corrosion CrackingAustenitic Stainless SteelsAustenitic SteelsCrack FormationCrack GrowthCrack Growth MeasurementLinear Elastic Fracture MechanicsSteelsThreshold Stress Intensity
Stress corrosion crack velocity and stress corrosion threshold stress intensity have been measured for Type 304L austenitic stainless steel in water with 42% MgCl2 at 130 C. The stress corrosion crack velocity vs stress intensity curve has a shape similar to the one for other austenitic steels and many other metallic and nonmetallic materials. The threshold stress intensity (KISCC) is 8 ± 1 and the plateau crack velocity is 3 to 6 × 10−8 m/s. Linear elastic fracture mechanics techniques can be applied to SCC testing of soft and tough materials, provided the kISCC is low enough, and crack branching can be avoided. Criteria for the formation of single, branched, and circular stress corrosion cracks are indicated.
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