stresszkorrózási

Stress corrosion, known in Hungarian as stresszkorrózió, is a type of corrosion that occurs under the combined action of tensile stress and a specific corrosive environment. This phenomenon can lead to premature failure of materials, particularly metals, even when the applied stress is below the material's yield strength. The process involves a localized attack on the material's surface, often initiating cracks that propagate over time.

The susceptibility of a material to stress corrosion is dependent on several factors. These include the material's composition, its microstructure, the presence and magnitude of applied or residual tensile stresses, and the nature of the corrosive environment. Different material-environment combinations are prone to stress corrosion cracking. For instance, stainless steels can be susceptible in chloride-containing environments, while certain aluminum alloys might be affected by specific alkaline solutions.

Understanding and mitigating stress corrosion is crucial in many engineering applications. Prevention strategies often involve selecting materials that are resistant to the specific environment, reducing or eliminating tensile stresses through design modifications or heat treatments, and controlling the corrosive environment by removing aggressive species or applying protective coatings. Monitoring for signs of stress corrosion cracking is also an important aspect of ensuring the long-term integrity of structures and components.