Effect of Cooling Rate on the Microstructure of Al-Zn Alloys with Addition of Silicon as Nanocomposite

Table 2

EDXS microanalysis of the Al-Zn-1.5Si (wt%) modified alloy solidified at different cooling rates.

Phase morphology	Sample condition		Average chemical composition (wt%)
	dT/dt; (°C s^−1)	Si; (wt%)	Al	Zn	Si
Dendritic region	11.7	1.53	80.7	19.3	—
	31.5	1.53	78.0	22.0	—
	50.1	1.53	85.0	15.0	—
Interdendritic region	11.7	1.53	10.3	89.7	—
	31.5	1.53	23.8	76.2	—
	50.1	1.53	20.1	79.9	—
Al-Zn-Si Eutectic (blocky)	11.7	1.53	13.5	31.6	54.9
	31.5	1.53	20.8	23.4	55.8
	50.1	1.53	8.1	34.5	57.4