Effects of Laser Energy on Corrosion Performance and Microstructure of Zr-based Metallic Glass Composite

(Zr₅₅Cu₃₀Al₁₀Ni₅)₉₉Nb₁amorphous composites were prepared by selective laser melting technology, and the effect of laser energy on the corrosion performance of(Zr₅₅Cu₃₀Al₁₀Ni₅)₉₉Nb₁amorphous alloy was investigated. The microstructure of(Zr₅₅Cu₃₀Al₁₀Ni₅)₉₉Nb₁amorphous composites was analyzed by scanning electron microscopy, X-ray diffractometer, and temperature field simulation, and the corrosion behavior of the fused cladding layer was investigated by using electrochemical testing experimental system. The results show that the microstructure of the fused cladding layer shows a gradient distribution and consists of three parts: dendritic eutectic, nanocrystalline and amorphous phases. The addition of the Nb element reduces the glass formation ability of Zr₅₅Cu₃₀Al₁₀Ni₅amorphous alloy, which precipitates as an unmelted phase on the amorphous matrix, and the surrounding microstructure shows a gradient microstructure.(Zr₅₅Cu₃₀Al₁₀Ni₅)₉₉Nb₁prepared by the energy of 109 J show the best corrosion performance with a corrosion potential of-0.43 V and a corrosion current density of 6.25×10^-5A/cm².