|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals and Materials 2021
||Microstructure Characterization of Aluminum 1100 Using Ultrasonic Backscatter Measurements and Synthetic Polycrystals
||Musa Norouzian, Joseph A. Turner
|On-Site Speaker (Planned)
Ultrasonic nondestructive testing has been increasingly used to characterize the microstructure of polycrystals. Although these techniques can be effective for certain microstructures, they have limitations in the form of assumptions used to facilitate the model development. To address these limitations, an approach based upon synthetic three-dimensional (3D) microstructure is proposed here in which the material information required for the single-scattering response model is obtained directly from the 3D digital volumes generated by DREAM.3D. In this work, all measurements are performed on an aluminum 1100 sample due to its single-phase and low twinning ability. Various ultrasonic measurements are performed to capture the independent scattering information. Using an iterative approach across different scattering measurements, the mean and the standard deviation of the synthetic volumes are optimized to match those of the measurements. Finally, electron backscatter diffraction data is used for validation (Research supported by AFRL under prime contract FA8650-15-D-5231).