Fig. 1. SEM image of quenched and tempered 45 steel

Fig. 2. SEM image of Fe901 powder

Fig. 3. Microstructures of laser cladding coating. (a) Full view; (b) top region; (c) middle region; (d) bottom region of molten pool

Fig. 4. XRD pattern of laser cladding coating

Fig. 5. Micro-hardness distribution of laser cladding coating in depth direction

Fig. 6. SEM images of worn surface of 45 steel and wear debris. (a)(b)(c) Worn surface; (d)(e)(f) wear debris

Fig. 7. SEM images of worn surface of laser cladding coating and wear debris. (a)(b)(c) Worn surface; (d)(e)(f) wear debris

Fig. 8. Friction coefficient of 45 steel under different loads. (a) 10 N; (b) 20 N; (c) 30 N

Fig. 9. Friction coefficient of laser cladding coating under different loads. (a) 10 N; (b) 20 N; (c) 30 N

Fig. 10. Wear mass losses of laser cladding coating and 45 steel under different loads