Fig. 1. Microstructures of EA4T. (a) OM; (b) SEM

Fig. 2. SEM morphologies. (a) Fe314; (b) Ni30

Fig. 3. Experimental equipments. (a) Laser cladding; (b) cold spraying

Fig. 4. Schematic of shear test

Fig. 5. SEM images of cold sprayed Ni30 coating. (a) Cross section; (b) interface

Fig. 6. Hardness curves of cold sprayed Ni30 coating. (a) Transverse; (b) longitudinal

Fig. 7. Microstructures of laser cladding coating. (a) Composite coating; (b) single cladding coating

Fig. 8. SEM micrographs and phase distribution EBSD photo of cladding layer. (a) Composite coating; (b) single cladding coating; (c) phase distribution EBSD photo of cladding layer

Fig. 9. EDS images of chemical elements at bottom of cladding layer. (a) Composite coating; (b) single cladding coating

Fig. 10. Shapes of heat affected zones. (a) Laesr cladding sample; (b) composite sample

Fig. 11. Microstructures of laser cladding heat affected zones. (a) Composite coating; (b) single cladding coating; (c) cold sprayed Ni30 middle layer; (d)-(f) SEM images corresponding to Figs. 11(a)-(c)

Fig. 12. Microhardness curves. (a) Composite coating; (b) single laser cladding

Fig. 13. Comparison of shear properties between composite sample and laser cladding sample. (a) Shear strength; (b) cross-section cutting rate

Fig. 14. Laser cladding fracture morphologies. (a) Cladding layer of composite sample; (b) HAZ of composite sample; (c) cladding layer of single cladding sample; (d) HAZ of single cladding sample