Table 1.

Chemical composition of base materials (Mass Fraction, wt.%).

Base Materials	Chemical Composition
Al 6061	Si	Fe	Cu	Mn	Mg	Cr	Zn	Ti	Al
	0.65~0.80	0.7	0.15~0.20	0.15	0.8~0.9	0.08~0.12	0.25	0.15	Bal.
Cu T2	Zn	Sn	Ni	S	Pb	O	Fe	As	Cu
	0.002~0.003	0.002	0.003~0.005	0.005	0.005	0.004~0.006	0.006	0.002	≥99.99