Continuous dynamic recrystallization induced by severe plastic deformation (SPD) is a special type of recrystallization that happens under large plastic deformation without the need to heat up the material. This type of recrystallization produces fine-grained microstructures that improve material strength. In this study, the improvement of the mechanical strength which is induced by the continuous dynamic recrystalization phenomenon is examined by using Plastic Flow Machining, a new SPD method, to process Al1050 samples. The results showed that after PFM processing, large plastic deformation was obtained across the produced sheet thickness. The deformation and microstructure showed the gradient characteristic which in favor for balancing strength and ductility. The mechanical property is greatly improved via the significant increase of the Vicker hardness values from 22 HV to 44 ÷ 54 after PFM thanks to considerable grain refinement induced by continuous dynamic recrystallization taking place during PFM processing.