Corrosion Fatigue


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corrosion fatigue

[kə′rō·zhən fə′tēg]
(metallurgy)
Damage to or failure of a metal due to corrosion combined with fluctuating fatigue stresses.

Corrosion Fatigue

 

a reduction of the endurance limit of a metal or alloy resulting from the simultaneous action of cyclical alternating stresses and a corrosive medium. Fracture of the metal occurs because of the appearance of a network of trans-crystalline or intercrystalline microscopic fissures, which become a large corrosion fatigue fissure. The maximum mechanical stress at which the metal does not fracture after the simultaneous action of an established number of alternating stress cycles and given corrosion conditions is called the corrosion fatigue limit.

References in periodicals archive ?
Nickel electroplating on low carbon steel are used in many industrial application due to its improving corrosion fatigue life.
Corrosion fatigue, when metals are subjected to alternating stresses in a corrosive environment, can affect all types of welded connections on drill ships, drilling and production rigs and platforms.
Precorrosion fatigue and corrosion fatigue damage rules have been broadly reported and indicate a synergism between corrosion and fatigue [7-9].
The site provides specialist laboratories for sour service, high pressure/high temperature, coatings and non-metallics, chemical treatment testing and particularly corrosion fatigue studies.
Investigation of the steel protection parameters in relation to specific products and service conditions may allow to control the corrosion fatigue properties of metals and predict this characteristics in the future [8].
Limit to corrosion fatigue strength evaluation of sae 1020 steel in acidic environment
The NTSB's key finding was that the Line 6B segment ruptured under normal operating pressure due to corrosion fatigue.
This work presents 37 papers from the conferences, detailing recent research and applications in environmental degradation of structural materials, hydrogen degradation, stress corrosion cracking, and hydrogen and corrosion fatigue, in addition to experiments and modeling of environmental-assisted cracking, advanced materials technologies, and case studies of material failure in various industrial applications.
In particular, several cases have been described in the literature of premature failures of structures due to localized attack such as corrosion fatigue, wear-corrosion, but mainly stress corrosion cracking (SCC) [3-5].
Some common causes of failures in HE are listed below: pipe and tubing imperfections, welding, fabrication, improper design, improper materials, crevice corrosion, design errors, improper operating conditions, pitting (fouling), stress-corrosion cracking, corrosion fatigue, general corrosion, erosion corrosion.
Chan, CP, Yue, TM, Man, HC, "The Effect of Excimer Laser Surface Treatment on the Pitting Corrosion Fatigue Behaviour of Aluminium Alloy 7075.
Gangloff, Corrosion fatigue crack propagation in metals.