Electron Backscatter Diffraction (EBSD) Study of the Processes That Occur in Aluminum-Based Alloys upon High-Speed Torsion
摘要
Abstract
High-speed torsion tests at temperature and deformation parameters close to friction stir welding are performed on a Gleeble-3800 installation. The tests are carried out at elevated temperatures at the same strain and different strain rates. EBSD is used to study the influence of the temperature and deformation parameters of high-speed torsion on microstructure formation in some alloys. A quantitative microstructural analysis is conducted to determine the grain sizes in various deformation zones. The dependence of the grain size of the temperature and deformation parameters of high-speed torsion is revealed. The temperature and deformation parameters ensuring the formation of a fine-grained structure are determined.