Abstract: By means of designing and preparing a wear and corrosion-resistant dual-phase Cr₁₃Ni₅Si₂ alloy, the phase composition, microstructure, hardness, wear-resistant and corrosion-resistant of the alloy were studied. The results show that the alloy is mainly composed by σ-Cr₁₃Ni₅Si₂ phase and γ phase.In the dendrite area, fine dispersed γ phase particles are well distributed in the σ phase, which is shown as the petal structure.In the inter-dendrite area, the γ phases with big size alternate with the smooth σ phase, and the volume fractions of σ and γ phase are almost the same.The average rockwell hardness of the alloy is about 60.9 HRC, and the average Vickers hardness is about 513HV.During the reciprocating friction test, the average friction coefficient of the alloy is about 0.305. The γ phase in the inter-dendrite area firstly generates wear deformation and results in the fracture of the σ phase, which is thought to be the main wear mechanism of the alloy.The corrosion potential of the alloy is about-0.296 V, and the passivation current density is about 1.027×10^-5 A·cm^-2.The potential difference around the fine dispersed distributed γ phase in the dendrite area accumulates slowly with the increase of the potential, which is the main reason for the appearance of the secondary passivation of the alloy during the potentiodynamic polarization curve test.