Surface Layer Properties after Successive EDM or EDA and Then Superficial Roto-Peen Machining

Figure 6

Surface layer microstructure after the: (a) EDM U = 80 (V), I = 48 (A), Ti = 400 (μs), (b) EDM U = 80 (V), I = 48 (A), Ti= 400 (μs), Tp = 50 (μs) and roto-peen 𝑛=5000 (rev/min), 𝑡=5 (min).

(a)

(b)