Effects of Laser Cladding Parameters on Properties of Fe-based Amorphous Coatings
Fe-Cr-Mo-C-B-Si amorphous coating with a maximum thickness of 1 mm was prepared on Q235 steel by coaxial powder feeding laser cladding.The influence of laser cladding parameters on amorphous forming ability,micro-structure,microhardness,wear and corrosion resistance of cladding layers was investigated.The results reveal that the amorphous phase content in the cladding layer is closely related to the laser energy density,and positively correlated with the performance of the cladding layer.With the increase of laser energy density,the amorphous phase content,microhardness,wear and corrosion resistance of the cladding layer all present a trend of increase firstly and then decrease.The cladding layer prepared at 125.00 J/mm2 exhibits desirable wear and corrosion resistance,which is mainly attributed to fine grain strengthening and amorphous strengthening.
Laser CladdingLaser Energy DensityMicrohardnessWear ResistanceCorrosion Resistance
NETL
NSTL
万方数据
