The peculiarity of cyclic elastic-plastic deformation of aluminum alloys D16ChATV under the conditions of the previous combined load

Abstract

The results of a study of the influence of low-cycle loading of the aluminum alloy D16ChATV, after a previous combined loading, on its plasticity. The previous combined load (PCL) was applied with the help of a short-term external force impulse superimposed on the main monotonic load by stretching. The residual fatigue strength of the material after the PCL is estimated using the deformation and energy criteria. The peculiarities of the changes in the micro-pattern of the surface of fracture of the material are analyzed to identify the main mechanisms of micro-deformation and fracture of materials.