Effect of Dispersoids and Intermetallics on Hardening the Al-Si-Cu-Mg Cast Alloys

Table 2

Chemical composition of the 354 alloys used in this study (wt.%).

Alloy/Element	Si	Fe	Cu	Mn	Mg	Ti	Sr (ppm)	Ni	Zr	Al2O3 (volume%)	SiC (volume%)
A∗	9.43	0.08	1.85	0.01	0.49	0.22	150	∼	∼	—	—
B	9.43	0.08	1.85	0.01	0.49	0.21	165	—	—	∼1.5
C	9.43	0.08	1.85	0.01	0.49	0.19	170	—	—		∼1.5
D	9.16	0.08	1.84	0.01	0.49	0.22	149	0.46	∼	—	—
E	9.10	0.07	1.83	0.00	0.49	0.21	145	∼	0.39	—	—
F	9.10	0.08	1.86	0.00	0.46	0.22	132	0.40	0.39	—	—
G	9.01	0.08	1.85	0.00	0.45	0.21	137	0.21	0.19	—	—

∗354 base alloy; Ni, Zr, and dispersoid additions are highlighted in bold.