Research Article
[Retracted] Synthesis, Mechanical, and Tribological Performance Analysis of Stir-Casted AA7079: ZrO2 + Si3N4 Hybrid Composites by Taguchi Route
Table 9
Response table for signal to noise ratios (Vickers hardness test); larger is better.
| Level | % of reinforcement | Agitation speed (rpm) | Agitation time (min) | Molten temperature (°C) |
| 1 | 40.58 | 41.26 | 40.96 | 41.06 | 2 | 41.11 | 40.88 | 40.94 | 41.11 | 3 | 41.42 | 41.30 | 41.32 | 41.25 | 4 | 41.47 | 41.14 | 41.36 | 41.18 | Delta | 0.89 | 0.42 | 0.41 | 0.21 | Rank | 1 | 2 | 3 | 4 |
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