Phase structure of ZK60-1Er magnesium alloy compressed at 450 °C

The phase structure of ZK60-1Er magnesium alloy thermally compressed at the temperature of 450 °C and the strain rate of 1×10−4 s−1 was determined by transmission electron microscopy (TEM) and high-resolution electron microscopy (HREM). The results show that this magnesium alloy contains many new W phases (Mg3Zn3Er2, FCC structure) in the matrix. Those new W phases have two morphologies, either irregularly rectangular or rod morphology. Lattice constants of the two new W phases are slightly higher than those of W Phase (Mg3Zn3Y2) containing rare earth element of yttrium.