Metadynamic recrystallization behavior of 5083 aluminum alloy under double-pass compression and stress relaxation tests

The static softening behavior of A5083 aluminum alloy was studied through two thermomechanical tests, namely double-pass compression test and stress relaxation test. Metadynamic recrystallization the further conventional cannot achieve complete recrystallization, which means that in test, traditional method used to determine recrystallized fraction is no longer applicable. Hence, a new proposed based on sigmoidal relationship between fraction. order effects forming parameters metadynamic from strong weak, as follows: strain rate, temperature, first-pass strain. External plays significant role retarding thereby amplifying recrystallization. Interestingly, considered occur immediately, has an incubation time approximately 1 s alloy. evolution microhardness microstructure tests electron backscatter diffraction confirmed these conclusions. In addition, phenomena hardening yield drop, caused by aging, were observed only under special experimental conditions.