High-strength magnesium-zinc-manganese-yttrium magnesium alloy material

The invention relates to a high-strength magnesium-zinc-manganese-yttrium magnesium alloy material which is prepared from the following components in percentage by mass: 1.5-9.0% of Zn, 0.5-1.5% of Mn, 0.3-10% of Y, at most 0.15% of inevitable impurity and the balance of magnesium. Compared with the commercial high-strength wrought magnesium alloy ZK60 and high-zinc-content magnesium-zinc-manganese magnesium alloy, the material provided by the invention has obviously higher tensile strength and yield strength; and compared with the Mg97Zn1Y2 alloy, the material provided by the invention has different components, and has obvious higher tensile strength and yield strength on the premise of the same plasticity. The magnesium alloy material can obtain high performance only by carrying out wrought treatment on common wrought treatment equipment without taking any special technical measure, and therefore, the magnesium alloy material has the advantages of low cost and high commercial value.