Microtructure and Properties of ZCuAl8Mnl3Fe3Ni2 Laser Cladding Layers
The ZCuAl8Mn13Fe3Ni2 cladding layer was prepared on a ZCuAl8Mn13Fe3Ni2 alloy substrate using laser cladding technology.The effect of laser cladding technology on the microstructure and properties of the cladding layer was studied.The experimental results show that the ZCuAl8Mn13Fe3Ni2 cladding layer is mainly composed of Cu-based face-centered cubic solid solution α phase,body-centered cubic solid solution β phase,complex cubic solid solution y2 phase and intermetallic compound k phase.When the laser cladding process parameters set at 1 600 W power,6 mm/s scanning rate,2 r/min powder feed rate,and 3.5 L/min gas flow rate,the cladding layer exhibited an average microhardness of 273HV0.2,acorrosion current density of 3.73× 10-3mA/cm2,and ta corrosion voltage of-0.271 V.The average corrosion rate in artificial seawater is 0.837 2 g/cm3,and its corrosion resistance is 95.3％of that of ZCuAl8Mn13Fe3Ni2 alloy substrate.
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