Parameter Design in Carbonitriding of EN36, 16MnCr5, and AISI 4140 Steels Using Principal Component-Based Grey Incidence (PGI)

Figure 7

Effects of parameters on responses. (a) Material substrate. (b) Carbonitriding temperature. (c) Carbonitriding time. (d) Flow rate of ammonia.

(a)

(b)

(c)

(d)