FSP was used to modify a Mg alloy and insert nano-sized SiO. The test was conducted a total four times with the average grain size varying from 0.5–2μm.  This nearly doubled the hardness of the Mg and also increased the super-plasticity. At room temperature, the yield stress of the FSP composites was improved in the 1D and in the 2D specimens signifying a larger resistance of the product metal under high stress conditions without deforming. The tensile strength was shown to increase along with the yield stress.