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Fig. 6 | Mechanics of Advanced Materials and Modern Processes

Fig. 6

From: Parametric optimization of powder mixed electrical discharge machining for nickel-based superalloy inconel-800 using response surface methodology

Fig. 6

SEM micrographs (×100, ×1000, and × 2000) of Inconel-800 after PMEDM. a, d and g Experiment No. 46, at Ip = 4 A, Ton = 60 μs, Toff = 45 μs, Cu-Cr electrode in tungsten- carbide powder-mixed dielectric. b, e and h Experiment No. 44, at Ip = 8 A, Ton = 90 μs, Toff = 45 μs, graphite electrode in cobalt powder-mixed dielectric. c, f and i Experiment No. 03, at Ip = 8 A, Ton = 90 μs, Toff = 60 μs graphite electrode in boron carbide powder mixed dielectric. g Experiment No. 46, at Ip = 4 A, Ton = 90 μs, Toff = 45 μs, Cu-Cr electrode in tungsten- carbide powder-mixed dielectric. h Experiment No. 44, at Ip = 8 A, Ton = 60 μs, Toff = 45 μs, graphite electrode in cobalt powder-mixed dielectric. i Experiment No. 03, at Ip = 8 A, Ton = 90 μs, Toff = 60 μs graphite electrode in boron carbide powder mixed dielectric

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