Fatigue type cracking of metal caused by repeated or fluctuating stresses in a corrosive environment characterized by shorter life than would be encountered as a result of either the repeated or fluctuating stress alone or the corrosive environment alone.
Cracking that initiates and propagates due to the application of repeated or fluctuating stresses, and the initiation and propagation occurs more rapidly due to the presence of a corrosive environment.
Fatigue accelerated by simultaneous attack from a corrosive environment.
Fatigue accelerated by simultaneous corrosion.
The process in which a metal fractures prematurely under conditions of simultaneous corrosion and repeated cyclic loading at lower stress levels or fewer cycles than would be required in the absence of the corrosive environment.
Cracking due to repeating and fluctuating stresses in a corrosive environment.
When chemically reactive agents can penetrate into fatigue cracks they can accelerate crack advancement. The chemical condition within the crack can be more aggressive than on the free surface. Even if the metal surface at the crack tip passivates (forms an inert barrier) the next fatigue loading can crack the brittle deposit and reactivate the whole process.
Fatigue that arises when alternating or repeated stress combines with corrosion. The severity of the action depends on the range and frequency of the stress, the nature of the corroding condition and the time under stress.
The combined action of corrosion and fatigue (cyclic stressing) in causing metal fracture.
Cracks produced by the combined action of repeated or fluctuating stress and a corrosive environment, which produces the cracking at lower stress levels or fewer cycles of stress than would be the case if no corrosive environment were present.
Corrosion fatigue is fatigue in a corrosive environment. It is the mechanical degradation of a material under the joint action of corrosion and cyclic loading. Nearly all engineering structures experience some form of alternating stress and are exposed to harmful environments during their service life.