Synergistically improved damping, elastic modulus and mechanical properties of rolled Mg-8Li-4Y–2Er-2Zn-0.6Zr alloy with twins and long-period stacking ordered phase

Mg-8Li-4Y–2Er-2Zn-0.6Zr alloy with high damping, elastic modulus and mechanical properties was prepared by heat treatment and cold rolling. 18R-type long-period stacking ordered phase, LPSO, is introduced into the alloy after heat treatment at 450 °C for 6 h. After cold-rolling, twins and kinking of the LPSO phase appear, causing the increase of damping capacity from 0.01 to 0.02. The tensile strength is increased from 142 MPa to 221 MPa....