Abstract: In the indirect experimentation way, the simulative research about the relation between strain-corrosive current of 7475-T761 aluminum in 3.5% NaCl solution is carried out in the paper. Then, in addition to the local strain way, the erosion of environment anode solution during corrosive fatigue crack initiation is quantitatively calculated. At last, according to the result of calculations, the paper analyzes the role of anode solution during corrosive fatigue crack initiation. The quantitative calculations and analysis of anode solution during corrosive fatigue crack initiation in the paper are very valuable to research the corrosive fatigue mechanism of certain materials under certain environments, and supply the important reference to analyze the environmental factors of corrosive fatigue.

Key words: 74752T 761 alum inum, co rro sive current, anode so lut ion, local st rain w ay, co rro sive fat igue