High-temperature deformation and creep in Mg wrought alloys

The high-temperature deformation data obtained for a number of different Mg alloys by torsion and tension creep are discussed. ZM21 alloy exhibited peak flow stresses comparable to that observed in AZ31, and the equivalent strain to fracture in torsion for the two alloys was similar. In the cases of ZEK200 and ZM21, creep was found to obey the same constitutive equations as hot working, suggesting a continuity of mechanical parameters and substructure in the two regimes.