Transmission electron microscopy investigation and interpretation of the morphology and interfacial structure of the [epsilon]′-Mg₅₄Ag₁₇ precipitates in an Mg–Sn–Mn–Ag–Zn alloy

The morphology and interfacial structure of the [epsilon]′-Mg₅₄Ag₁₇ precipitates in an Mg–Sn–Mn–Ag–Zn alloy have been studied both experimentally by transmission electron microscopy and theoretically using a secondary coincident site lattice model. The good agreement between the experimental results and theoretical calculations implies the preferred rules of the precipitates' crystallographic features.