Process Chain impact on Fracture Mechanics of AlClad 2524 Aluminum Sheets for the Aerospace Industry

The fracture mechanics of 2524 aluminum sheets play a critical role in determining their suitability for aerospace applications, where structural integrity and reliability are paramount. This work examines how variations within the process chain—including casting, rolling, heat treatment, and surface finishing—affect the fracture behavior and mechanical performance of 2524 aluminum alloys. Key findings highlight that process parameters such as temperature profiles, deformation rates, and cooling / heating rates can significantly influence microstructural features like grain size, precipitate size and distribution, as well as residual stresses. These, in turn, impact the sheets' resistance to crack initiation and propagation under operational loads.

The investigations emphasized that optimizing each step of the process chain is essential to achieve desired material properties, including high toughness and fatigue resistance. Inconsistencies or deviations in processing can lead to heterogeneities in the microstructure, increasing the risk of premature fracture or failure in service. The aerospace industry's stringent demands necessitate continuous monitoring and precise control of process variables to ensure that 2524 aluminum sheets meet safety and performance standards. Ultimately, the integration of advanced process control and quality assurance methodologies is vital for enhancing the fracture mechanics and overall reliability of 2524 aluminum components used in aircraft structures.