Processing Window and Microstructure of NiCoCrAlY Coating Deposited on Cast Iron Using Multilayer Laser Cladding

Figure 4

Surface morphology of laser tracks at the scanning velocity of 5 mm/s with various laser powers and powder feed rates of (a) 1.67 g/min, (b) 2.56 g/min, (c) 3.45 g/min, and (d) 4.33 g/min.

(a)

(b)

(c)

(d)