Through-Thickness Microstructure, Texture and Strength Gradients in AA 7055 Rolled Plate
Through-thickness microstructure, texture and mechanical property gradients in the longitudinal section of AA 7055 rolled plate have been investigated using electron back-scattered diffraction (EBSD) technique. Quantitative analysis of the microstructure and texture through the plate thickness was conducted. It was found that the microstructure and texture are obviously non-homogeneous through the plate thickness. From center to surface, more equiaxed grains are observed. As expected, the degree of recrystallization increases with increasing the S value. The grains in the center layer exhibited preferential orientations while the most grains near the surface presented a random one. The strength of each observed layer has also been tested.
Yafang Han et al.
J.Z. Chen et al., "Through-Thickness Microstructure, Texture and Strength Gradients in AA 7055 Rolled Plate", Materials Science Forum, Vols. 546-549, pp. 957-960, 2007