Cold Expansion Strengthening of 7050 Aluminum Alloy Hole: Structure, Residual Stress, and Fatigue Life

Table 1

Chemical composition of 7050-T7451 aluminum alloy.

Elements	Si	Fe	Cu	Mn	Mg	Cr	Zr	Zn	Al
Contents	0.03	0.11	2.04	0.003	2.31	0.009	0.1	6.02	Bal.