The effect of hydrogen upon the mechanical properties of A7075 aluminum alloy was investigated using the electrochemical cathode charge method. The apparent hydrogen diffusivity in the A7075 alloy was 4.4 x 10-12m2/s at 318K. Hydrogen charging induced a decrease in both the tensile strength and the elongation to fracture, in comparison to tests performed in an atmospheric environment. A striation-like pattern, which was characteristic of fracture surfaces in hydrogen-embrittled iron and steels, was also observed.

Hydrogen Diffusion and Embrittlement in 7075 Aluminum Alloy. N.Takano: Materials Science and Engineering A, 2008, 483-484[1-2], 336-9