Fig. 1. Principle of laser cladding deposition

Fig. 2. Deposition methods. (a) Uniform thickness deposition (from high to low); (b) variable thickness deposition (from high to low); (c) variable thickness deposition (from low to high)

Fig. 3. Effect of scanning speed on height and width of cladding layer

Fig. 4. Selected location and dimension of tensile part

Fig. 5. Diagram of testing points of hardness

Fig. 6. Microstructures. (a) Cross section; (b) longitudinal section by uniform thickness deposition (from high to low); (c) longitudinal section by variable thickness deposition (from high to low); (c) longitudinal section by variable thickness deposition (from low to high)

Fig. 7. Fracture morphologies obtained by scanning electron microscope. (a) Macro fracture morphology of tensile sample; (b) fracture morphology obtained by scanning electron microscope with low magnification; (c) fracture morphology obtained by scanning electron microscope with high magnification

Fig. 8. Plots of hardness. (a) Horizontal direction; (b) deposition direction

Fig. 9. Pore distributions at different positions of ramp's thin-walled part. (a) Bottom; (b) edge