Intergranular Corrosion Fatigue Fracture Surface Analysis of Nickel Alloy

The paper presents a systematic investigation of the effects of a corrosive condition on grain boundary corrosion and other deleterious phenomena in a nickel alloys commonly used in nuclear waste containers, chemical refining plants and steam generator tubes. Grain boundary corrosion is investigated with the aid of microscopy. The results show that a concentrated corrosive condition greatly increases the susceptibility to crack initiation and crack propagation along grain boundaries, i.e. intergranular fracture.