The microstructure and mechanical properties of 7475-T7351 aluminum alloy sheet with 25 mm in thickness at different orientations were investigated by tensile testing

metallographic（OM）

transmission electron microscopy（TEM）and orientation distribution functions（ODF）analysis.And the relationship between texture and planar anisotropy was analyzed quantitatively.The results show that the longitudinal yield strength

tensile strength and elongation of the sheet reach 501 MPa

428 MPa and8.4%

respectively.And the lateral yield strength

tensile strength and elongation reach 491 MPa

416 MPa and 8.9%

respectively.The longitudinal strengths（yield strength and tensile strength）of the sheet are about 10 MPa higher than the lateral strengths of specimens

and the longitudinal and lateral elongation of the sheet exhibits ignore difference

indicating that the alloy sheet belongs to anisotropic.The major texture of 7475-T7351 aluminum alloy sheet is copper texture{112}<111>

Stexture{123}<634> and Brass texture {110}<112>

and the volume fraction of those texture in the alloy is19.95%

16.67%

12.06%

respectively.Moreover

there exists relatively weak cube texture{001}<100>

which is formed during recrystallization process

and the volume fraction is about 4.58%.By the calculation of the Schmid factor

it reveals that the anisotropy of mechanical properties of the sheet at different orientations is closely related with the texture in the alloy.