Table 3: JC constants of Al2024 and Al7075 [5,22].

Property Al-2024 Al-7075
A (MPa) 200 350
B (MPa) 300 200
C 0.003 0.001
n 0.3 0.499
m 1.364 0.705
d1 -0.77 -0.0608
d2 1.45 0.51
d3 0.47 -0.952
d4 0 0.036
d5 1.6 0.697