Experimental and Numerical Investigations of High Strain Rate Torsion Tests of Al-Based Alloys at Elevated Temperatures

This study aims to validate a finite element model (FEM) of the high strain rate torsion tests on several aluminum-based alloys by realizing physical simulation of FSW by torsion tests, finite element modelling of this process, and comparing the obtained data. A high strain rate torsion test at elevated temperatures was realized on Gleeble-3800 system for different Al alloys: AA 1050, AA 5082 O, and AA 2024 T4. High strain rate torsion tests were performed at two elevated temperature—350 and 500 °C. The stress–strain curves were obtained and analyzed after physical simulation. A finite element model was built and validated using temperature and torque data obtained after physical simulation. The stress–strain curves obtained by numerical simulation are in good agreement with the experimental data.