| Abstract Scope |
In this study, different aluminum alloys were multi-layered using the ARB process to enhance elongation through work hardening by rolling, precipitation hardening by heat treatment, and grain growth. The experiment was conducted with a total of four layers, and the successful fabrication of a composite sheet was achieved.
To evaluate the microstructure and mechanical properties of the composite sheet, Electron Backscatter Diffraction, tensile tests, and Erichsen tests were performed. Furthermore, to investigate the correlation between strength and elongation, an annealing experiment was conducted at 250°C, 300°C, 350°C, and 400°C for 30 minutes using an electric furnace.
As a result, the study successfully fabricated a lamella-structured composite sheet with a bimodal structure depending on the annealing temperature. The final composite exhibited a strength of 392 MPa and an elongation of 18%, demonstrating the feasibility of producing high-strength and high-ductility aluminum composite sheets using the ARB process. |