Deep cracking in a metal part due to the synergistic action of tensile stress and a corrosive environment, causing failure in less time than could be predicted by simply adding the effects of stress and the corrosive environment together.
As indicated by the name, stress corrosion cracking is a crack initiation, which occurs as a result of simultaneous effects of mechanical tensile load and a corrosion attack. The crack extension always takes place vertically to the tensile strength. Nearly all metallic materials are susceptible for stress corrosion cracking in specific media. In operational practice, trans-crystalline stress corrosion cracking of austenitic Cr-Ni-steel in strong alkaline or chloride-containing solutions is of special importance, because nearly all natural waters contain chlorides. Crack susceptibility increases rising chloride content, higher tensile stress and increasing temperature.
The fracture of a metal in a corrosive environment. Austenitic stainless steel belts are susceptible to a phenomenon known as "Stress Corrosion Cracking" under certain conditions.
A defect which appears in metal which has been cold worked. It is caused by a deformation of the molecular structure which brings about internal stresses within the alloy causing it to subsequently crack. It can be avoided by stress relief annealing which removes the unwanted stresses with a minimal loss of hardness in the alloy.
Spontaneous cracking produced by the combined action of corrosion and static stress.
Stress corrosion cracking (SCC) is a cracking process that requires the simultaneous action of a corrosive agent and sustained tensile stress. The stresses may be significantly below the yield strength of the material, and can be residual or applied. Stress-corrosion cracking may occur in combination with hydrogen embrittlement. (See Corrosion.)
Slowly developing cracks that form in stainless steel due to mechanical stress and exposure to a corrosive environment.
Fracture resulting from the combination of corrosion and tensile stress.
Stress corrosion cracking (SCC) is the unexpected sudden failure of normally ductile metals subjected to a constant tensile stress in a corrosive environment, especially at elevated temperature. This type of corrosion often progresses rapidly.