Deforming magnesium alloy and preparation method thereof

The invention provides a deforming magnesium alloy and a preparation method thereof. The deforming magnesium alloy comprises the following components in percentage by mass: 0.1-10% of neodymium, 10-12% of gadolinium, 3-5% of yttrium, 0.5-2% of zinc, 0.3-0.8% of zirconium, and the balance of magnesium and inevitable impurities. Compared with WE54 in the prior art, the invention is characterized in that rare-earth elements neodymium, gadolinium and yttrium are added into the Mg-Zn-Zr magnesium alloy. Firstly, after adding zinc, abundant strip Mg12YZn precipitated phases are formed at the alloy grain boundary to prevent grain boundary migration at high temperature and enhance the high-temperature stability of the alloy, and the precipitated phases are uniformly arranged in the extrusion direction to prevent basal dislocation migration and enhance the mechanical properties of the alloy; and secondly, the three rare-earth elements gadolinium, yttrium and neodymium are added, so the interactions among the rare-earth elements can be utilized to lower the solid solubility of the gadolinium, yttrium and neodymium in the magnesium base, thereby promoting the formation of the precipitated phases and enhancing the mechanical properties of the alloy.