Intergranular Stress Corrosion Cracking (IGSCC)
Definition - What does Intergranular Stress Corrosion Cracking (IGSCC) mean?
Intergranular stress corrosion cracking (IGSCC) is a type of corrosion due to applied forces on the granular boundaries of a material; the molecular material that exists on the boundary is more susceptible than the internally placed molecules.
Corrosionpedia explains Intergranular Stress Corrosion Cracking (IGSCC)
Intergranular stress corrosion cracking is common in alloys that are otherwise typically corrosion-resistant. This is because of the intermolecular space that exists due to the interaction of two or more components. Intergranular stress corrosion cracking tends to occur when pre-existing intergranular fractures are present.