Fig. 1. Micromorphology (a) and particle size distribution (b) of alloy powder

Fig. 2. Macromorphology of laser cladding layer

Fig. 3. Dilatometric curve of the GX4CrNi13-4 sample

Fig. 4. XRD spectrum of GX4CrNi13-4 cladding at different heat treatment schemes

Fig. 5. Metallographs of GX4CrNi13-4 cladding at different heat treatment schemes(a) As-built sample, (b) Single aging sample, (c) Solution aging sample

Fig. 6. SEM morphology of GX4CrNi13-4 cladding at different heat treatment schemes gained by secondary electron signal (color online)(a, b) As-built sample, (c, d) Solution aging sample, (e, f) Single aging sample

Fig. 7. Comparison of tensile properties of GX4CrNi13-4 alloy at room temperature treated by different heat treatments(a) Comparison of tensile strength, (b) Comparison of elongation after fracture

Fig. 8. Fracture morphology of GX4CrNi13-4 alloy sample treated by different heat treatments(a, b) As-built sample, (c, d) Solution aging sample, (e, f) Single aging sample

Fig. 9. TEM morphology of reversed austenite in 620 °C single aging sample