Fig. 1. Rockwell hardness of cladding sample surface and its testing error

Fig. 2. Effect of laser power on Rockwell hardness of cladding layer surface under different scanning speeds

Fig. 3. Effect of powder feeding rate on Rockwell hardness of cladding layer surface under different scanning speeds

Fig. 4. Effect of scanning speed on Rockwell hardness of cladding layer surface under different power feeding rates

Fig. 5. Surface macro appearance of laser cladding layer prepared at different process parameters

Fig. 6. Geometric morphology of laser cladding layer prepared at different process parameters

Fig. 7. Effect of process parameters on geometric width of cladding layer

Fig. 8. Average geometric width of cladding layer and its testing error

Fig. 9. Effect of process parameters on geometric height of cladding layer

Fig. 10. Average geometric height of cladding layer and its testing error

Fig. 11. Microstructures of cladding layer of samples 1# and 8#. (a) Sample 1#; (b) sample 8#

Fig. 12. Three-dimensional morphology of cross-section of cladding layer prepared at optimal process parameters

Fig. 13. Microhardness distribution of laser cladding prepared at optimal process parameters

Fig. 14. Microhardness of cladding layer prepared at optimal process parameters and its testing error