Table 7 Results of the orthogonal Experiment.

From: Investigation of surface integrity in inconel 718 enhanced by heat treatment, ultrasonic impact and multi-media jet processing

Experimental parameters

Surface roughness/µm

Surface microhardness/HV

Surface residual stress/MPa

HT-UIT-SPEWJ−1

2.268

488.22

−926.3

HT-UIT-SPEWJ−2

2.084

499.08

−958.26

HT-UIT-SPEWJ−3

2.171

481.26

−932.17

HT-UIT-SPEWJ−4

2.371

470.26

−893.26

HT-UIT-SPEWJ−5

1.962

503.81

−969.84

HT-UIT-SPEWJ−6

1.848

519.23

−1003.7

HT-UIT-SPEWJ−7

1.702

494.26

−973.35

HT-UIT-SPEWJ−8

1.643

527.66

−990.26

HT-UIT-SPEWJ−9

1.788

522.83

−1014.54

HT-UIT-SPEWJ−10

1.579

539.51

−1052.65

HT-UIT-SPEWJ−11

1.403

551.26

−1037.6

HT-UIT-SPEWJ−12

1.287

559.78

−1069.2

HT-UIT-SPEWJ−13

1.796

543.26

−1083.21

HT-UIT-SPEWJ−14

1.084

564.85

−1095.3

HT-UIT-SPEWJ−15

0.932

579.07

−1126.33

HT-UIT-SPEWJ−16

1.203

553.55

−1078.88

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