[Retracted] Synthesis, Mechanical, and Tribological Performance Analysis of Stir-Casted AA7079: ZrO₂ + Si₃N₄ Hybrid Composites by Taguchi Route

Table 8

Response table for means (Vickers hardness test).

Level	% of reinforcement	Agitation speed (rpm)	Agitation time (min)	Molten temperature (^oC)
1	107.0	115.8	111.8	112.8
2	113.8	111.0	111.8	114.0
3	117.8	116.3	116.5	115.5
4	118.5	114.0	117.0	114.8
Delta	11.5	5.3	5.3	2.8
Rank	1	2	3	4