High-performance selective laser melting Cr3C2/316L alloy and preparation method thereof

The invention discloses a high-performance selective laser melting Cr3C2/316L alloy and a preparation method thereof, and belongs to the technical field of additive manufacturing. The Cr3C2/316L alloy is composed of a 316L matrix and a Cr3C2 particle reinforced phase, Cr3C2 particles account for 10-11% of the total weight of the alloy, and the preparation method of the Cr3C2/316L alloy comprises the following steps that Cr3C2 powder and 316L powder serve as raw materials to be mechanically mixed, mixed powder is obtained, then the Cr3C2/316L alloy is obtained by adopting the selective laser melting technology and optimizing the powder granularity and technological parameters, the relative density of the Cr3C2/316L alloy is larger than or equal to 99.7%, and the relative density of the Cr3C2/316L alloy is larger than or equal to 99.7%. The porosity is smaller than or equal to 0.41%, the hardness is larger than or equal to 327 HV0.1, the tensile strength is larger than or equal to 1032 MPa, the yield strength i