Optimization of Stir-Squeeze Casting Parameters to Analyze the Mechanical Properties of Al7475/B4C/Al₂O₃/TiB2 Hybrid Composites by the Taguchi Method

Table 3

Hardness and tensile strength results from experiment and Minitab.

Experiment No	SSC parameters				Observational result		S/N ratio
	SD (Rpm)	ME (°C)	SE (MPa)	RT (wt%)	TS (Mpa)	HN	TS (dB)	HN (dB)
L1	300	750	50	2	325.23	95.60	−50.2438	−39.6092
L2	300	800	75	4	245.23	108.20	−47.7915	−40.6845
L3	300	850	100	6	315.26	107.80	−49.9734	−40.6524
L4	300	900	125	8	278.69	88.20	−48.9024	−38.9094
L5	350	750	75	6	322.56	95.60	−50.1722	−39.6092
L6	350	800	50	8	285.36	110.50	−49.1079	−40.8672
L7	350	850	125	2	258.69	130.60	−48.2556	−42.3189
L8	350	900	100	4	243.52	120.80	−47.7307	−41.6413
L9	400	750	100	8	312.60	95.60	−49.8998	−39.6092
L10	400	800	125	6	246.87	105.80	−47.8494	−40.4897
L11	400	850	50	4	275.23	79.25	−48.7939	−37.9800
L12	400	900	75	2	315.26	112.87	−49.9734	−41.0516
L13	450	750	125	4	215.23	128.50	−46.6581	−42.1781
L14	450	800	100	2	276.29	89.50	−48.8273	−39.0365
L15	450	850	75	8	243.88	79.20	−47.7435	−37.9745
L16	450	900	50	6	302.89	102.90	−49.6257	−40.2483