Optimization on Tribological Characteristics of Stir-Casted AA7076/Nano Zirconium Dioxide/Boron Nitride Hybrid Composites by Taguchi Method

Table 8

Average response table for VHN.

Level	% of reinforcement	Agitation speed (rpm)	Agitation time (min)	Molten temperature (C)
1	108	116	112	113
2	114	112	112	115
3	118	117	117	116
4	119	115	118	115
Delta	12.0	6.2	5.4	3.0
Rank	1	2	3	4