Fig. 1. Experiment processes of laser cladding and laser quenching

Fig. 2. Size of impact sample

Fig. 3. Microstructures of cladding layer. (a) Microstructure of the top cladding layer; (b) microstructure of the middle cladding layer; (c) microstructure of the bottom cladding layer; (d) interface between the cladding layer and the substrate

Fig. 4. Comparison of microstructures of cladding layer before and after quenching. (a) Microstructures on the top of cladding layer; (b) microstructures in the middle of cladding layer

Fig. 5. SEM images and EDS spectra of chill microstructure at the interface area between cladding layer and substrate. (a) Before laser cladding; (b) after laser quenching

Fig. 6. Main strengthening precipitations in the cladding coating

Fig. 7. Microhardness distribution on the cross-section of the sample before and after laser quenching

Fig. 8. Friction coefficient curves and friction and wear morphologies of cladding layer surface