Simulation of hot working processes of 5083 Al alloy by means of torsion test

Abstract

Hot torsion tests and qualitative and quantitative microscopies were carried out. The stress-strain relation in the interrupted torsional deformation shows that the deformation resistance in the alloy soaked for 24hr decreases as much as about 20% compared with that soaked for 4hr. Improvement of the hot workability depends on the reduction of denuded zone around dendritic cast structure and on the refining and dispersion of the precipitated second phases with the proceeding of working process.