Research on Fatigue Mechanical Properties of Austenitic Stainless Steel for Marine Environment

Austenitic stainless steel is widely used in the marine environment because of its good strength, corrosion resistance, and weldability. However, the environment in the ocean is extremely complex and changeable, and the equipment may bear the combined action of static loads such as axial force, internal and external pressure, bending moment, and extreme temperature conditions. At the same time, it also bears the action of dynamic loads such as alternating external pressure, wave force, current force, which easily leads to fatigue damage of components. This study introduced the deformation behavior of austenitic stainless steel for the marine environment. In addition, the effects of oxidation damage and creep damage during fatigue deformation are summarized, and the dynamic strain aging effect in the process of fatigue deformation is described. It is very important to study fatigue behavior in a complex service environment.