Hot Compression Processing Map and Microstructure Evolution of a Mg–Sn–Al–Zn–Mn Alloy

In the present study, the microstructural evolution of solid-solution treated Mg–4Sn–3Al–1Zn–0.3Mn (TAZM) was explored through hot compression tests in the temperature range of 300–460 °C and the strain rate range of 0.001–1 s−1. Dynamic recrystallizationDynamic recrystallization (DRX) behaviors induced by hot compression and the effects of Sn alloying were studied, using analytical electron scanning microscopy. The correlation between DRX of α-Mg grains and dynamic precipitationDynamic precipitation of Mg2Sn during hot deformation was revealed. The influences of Mg2Sn dynamic precipitates over plastic deformation of α-Mg grains, texture evolution, and cracking were also discussed.