Fatigue Behavior of Coated Alloys

Dear Colleagues,

The growing development of different industrial sectors has contributed to the number of structural components’ failure increases due to cyclical loading, leading to the possibility of the loss of human life and irrecoverable economic damage. Mechanical components and structures subjected to cyclic stresses can lead to damage accumulation and fatigue failure. Fatigue as a failure mechanism has been investigated for over a century and still occurs continuously, indicating the complex nature of the topic. The mechanisms found in practice are associated with high cycle, low cycle, impact, fretting, corrosion, surface, and thermal fatigue. Furthermore, the synergy action between two or more mechanisms can cause even more deleterious effects than the action of a single mechanism. In addition to the type of loading, fatigue characteristics are affected by a set of variables that include operating temperature, environmental effects, microstructure, component geometry, and surface conditions. Over the years, several alternatives have been presented to minimize degradation effects and components, and to improve the safety of oil and gas structures, aeronautics, nuclear, and automobile and chemical sectors. Among them, surface coating techniques of metals and alloys stand out, which expanded with the growing industrial development. Despite the possibility of fatigue life being reduced with surface coating, this effect must be less than the damage induced by other degradation processes, such as wear, corrosion, etc. Therefore, it is important that mechanical behavior is not significantly compromised by the use of coatings which effectively contribute to extending the life of components and structures. Thus, the problem remains a great challenge for engineers and researchers.

This Special Edition intends to present advances in the interaction between coatings and metal fatigue for the scientific community. The effect of factors, such as temperature, mean stress, multiaxial stresses, surface roughness, variable amplitude loading, environment effects, is of particular relevance.

We invite you to submit original research, review articles, and short communications related to these topics.

Prof. Dr. Miguel Justino Ribeiro Barboza
Guest Editor

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• coating
• high-cycle fatigue
• fretting fatigue
• corrosion fatigue
• multi-axial fatigue