Mg and its alloys have great potential as structural materials because of their light weight, decent strength and ductility, and rich resource on the earth. They are arguably the lightest structural materials developed so far and have found some niche applications especially in aerospace and automobile industries. For wider use of Mg alloys, several challenges need to be addressed, including the relatively poor corrosion resistance of most Mg alloys, the great plastic anisotropy, and so on.
In this work, we present case studies of several Mg-alloys, from binary, tertiary to more complex compositions focusing on the high strain rate mechanical behavior. We show that a number of Magnesium alloys primarily fail by adiabatic shear banding under dynamic loading. The underlying mechanism is also suggested with a preliminary mechanistic model.