Fe based alloy cladding layer was prepared on the surface of 27SiMn steel cylindrical parts by high-speed laser cladding technology.The microstructure,microhardness and friction and wear properties of the cladding layer under different process parameters were analyzed to explore the effects of high-speed laser cladding process parameters on the microstructure,hardness and wear resistance of the cladding layer.The results show that there are no holes,cracks and other defects in the cladding layer under different process parameters,and effective metallurgical bonding is formed with the substrate.The thickness of cladding layer first increases and then decreases with the increase of laser power,and increases with the increase of powder feeding rate.The microhardness and wear resistance of the cladding layer show an increasing trend with the increase of laser power and powder feeding rate.Within the range of experimental parameters,the optimal parameters are that the power is 3000 W and the powder feeding rate is 28 rad/min.
high speed laser claddingprocess parametersmicrostructuremicrohardnesswear resistance
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