Dynamic compressive and tensile tests are conducted respectively on AZ31B and AM30 extrusions along extruding and transverse directions,and on GW123K extruded rods along extruding direction,using a Hopkinson pressure bar and a reflecting Hopkinson tension bar apparatus.Dynamic tensile tests are conducted on AZ31B sheets along rolling,transverse and 45°directions,and on AM50 and AM60 high pressure vacuum die cast sheets.Applied stain rates are in the range of 500s-1~4500s-1.Optical microscope and SEM are use...