Nuclear Engineering and Technology · 2018 · 20 citations · 26 references
EngineeringMaterials EngineeringMaterials ScienceCorrosion ScienceMetallic MaterialsMetallurgyCorrosion EngineeringCorrosion ProtectionCorrosion ResistanceCorrosion-resistant MaterialsFracture MechanicsStress Corrosion CrackingCorrosion Resistance Of Grain Boundary Strengthened AlloysGrain BoundariesGrain Boundary CorrosionGrain Boundary MorphologyGrain Structure EffectsIntergranular Stress Corrosion CrackingMicrostructure Effects On CorrosionStress Corrosion Cracking Resistance
The effect of a serrated grain boundary on stress corrosion cracking (SCC) of Alloy 600 was investigated in terms of improvement of SCC resistance. Serrated grain boundaries and straight grain boundaries were obtained by controlled heat treatment. SCC cracks preferentially initiated and grew at grain boundaries normal to the tensile loading axis. Resolved tensile stress normal to the grain boundary was lower in serrated grain boundaries compared to straight grain boundaries. The specimen with serrated grain boundaries showed higher SCC resistance than that with straight grain boundaries due to a lower resolved tensile stress normal to the grain boundary.
26