Microstructural Characterization of Beryllium Treated Al-Si Alloys

Table 1

Average chemical composition (wt%) of the 356 and 357 alloys studied.

Alloy code	Element concentration (wt%)
	Si	Fe	Mg	Ti	Sr	Be	Al
A1	7.146	0.09	0.40	0.168	0.00	0.00	Bal.
A1B	7.146	0.09	0.40	0.168	0.00	0.05	Bal.
A1S	7.146	0.09	0.40	0.168	0.02	0.00	Bal.
A1BS	7.146	0.09	0.40	0.168	0.02	0.05	Bal.
C3	7.146	0.60	0.80	0.168	0.00	0.00	Bal.
C3B	7.146	0.60	0.80	0.168	0.00	0.05	Bal.
C3S	7.146	0.60	0.80	0.168	0.02	0.00	Bal.
C3BS	7.146	0.60	0.80	0.168	0.02	0.05	Bal.

In the above table, codes A and C correspond to the Fe levels 0.09 and 0.6, respectively, while codes 1, 2, and 3 correspond to the Mg levels 0.4, 0.6, and 0.8, respectively. B and S represent Be and Sr, respectively.