Subgrain Characterization of AA 5005 Aluminum Alloy using Electron Backscatter Diffraction (EBSD)

摘要

The subgrain structure of hot rolled aluminum alloy AA 5005 has been characterized on as-received samples using Electron Backscatter Diffraction (EBSD). Based on the OIM scans of RD-ND and TD-ND, 3 dimensional microstructures of subgrains are built up using the 3D Microstructure Builder, which is a method for developing statistically representative digital representations of microstructures. These microstructures are used as input to models for microstructural evolution which in this case is a subgrain growth model to studying coarsening in such structures. The main objective is to understand the circumstances under which we can expect abnormal (sub-)grain growth leading to nucleation of recrystallization.