Study of selected properties of magnesium alloy AZ91 after heat treatment and forming

Magnesium and magnesium alloys are primarily used in aeronautical and automobile industry in large variety of structural characteristics because of their favorable combination of tensile strength (160–365 MPa), elastic modulus (45 GPa), and low density (1740 kg/m3), which is two-thirds that of aluminum. Magnesium alloys have high strength-to-weight ratio (tensile strength/density), comparable to those of other structural metals. Application, structure and mechanical properties of selected magnesium alloys were investigated.