Strain Path Changes in Aluminum

Sheet metal forming processes involve large plastic deformation and changes in strain path. In this work, a detailed analysis of a commercially pure aluminum sheet subjected to tension-tension sequences with pre-strain in the rolling direction (RD) and reloads along different directions is presented, taking into consideration the mechanical behavior and texture evolution. Two main hardening behavior tendencies are observed, depending whether the reloading direction occurs for an angle smaller or larger than 45 degrees.