Dynamic precipitation, microstructure and mechanical properties of Mg-5Zn-1Mn alloy sheets prepared by high strain-rate rolling

High density of nano-sized precipitates dynamically nucleated on the Mn particles and the high density of dislocations induced by the high strain rate rolling (HSRR). The precipitates can effectively suppress the growth of DRX grains by pinning the boundaries of the DRX grains or subgrains. The superior combination of strength and ductility for the sheet is contributed to the grain refinement and precipitation strengthening.98