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

Table 2

Stir-casting process parameters and its levels.

S. no.	Parameters	Level 1	Level 2	Level 3	Level 4
1.	% of reinforcement	0	4	8	12
2.	Agitation speed (rpm)	450	500	550	600
3.	Agitation time (min)	15	20	25	30
4.	Molten temperature (°C)	700	750	800	850