[Retracted] Comparison of Microstructure and Mechanical Properties of A356/SiC Metal Matrix Composites Produced by Two Different Melting Routes

Table 10

Improved hardness of A356/SiC MMC by electromagnetic stir casting process.

A356/SiC; MMC	Sample; number	Electromagnetic stir casting samples (ESCS)			Mechanical stir casting samples (MSCS)			Improved; hardness; (BHN)
		Hardness; (BHN)	Variation; (BHN)	Average Hardness; (BHN)	Hardness; (BHN)	Variation; (BHN)	Average hardness; (BHN)
100% A356 + 0% SiC	1	76	1	75.66	75	1	75.33	0.43%
	2	76			76
	3	75			75
95% A356 + 5% SiC	1	82	4.5	84.16	77.5	7.5	81.16	3.56%
	2	84			85
	3	86.5			81
90% A356 + 10% SiC	1	93	5.4	96.13	88	9	92.33	3.95%
	2	98.4			97
	3	97			92
85% A356 + 15% SiC	1	101	7	104.66	97	10	102	2.54%
	2	105			107
	3	108			102