Rare earth magnesium alloy suitable for electric arc additive manufacturing

The invention discloses a rare earth magnesium alloy suitable for electric arc additive manufacturing, which comprises the following components in percentage by mass: 8.0-12.0% of gadolinium Gd, 2.5-4.5% of yttrium Y, 0.5-2.5% of zinc Zn, 0.3-0.8% of zirconium Zr, less than or equal to 0.1% of other single impurity elements, less than or equal to 0.2% of the total of other impurity elements and the balance of magnesium Mg. The tensile strength is larger than 350 MPa, the yield strength is larger than 220 MPa, the ductility is larger than 8%, the transverse mechanical property and the longitudinal mechanical property are consistent, and wide application prospects are achieved. 本发明公开的一种适用于电弧增材制造的稀土镁合金，按质量百分比计，成分为：钆Gd：8.0～12.0％，钇Y：2.5～4.5％，锌Zn：0.5～2.5％，锆Zr：0.3～0.8％，其他单个杂质元素：≦0.1％，其他杂质元素合计：≦0.2％，余量为镁Mg，将本发明提供的稀土镁合金丝材制造的堆积体，经过固溶和时效热处理后，抗拉强度大于350MPa，屈服强度大于220MPa，延伸率大于8％，且横纵向力学性能一致，具有较广阔的应用前景。