Through-Thickness Microstructure, Texture and Strength Gradients in AA 7055 Rolled Plate

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Abstract:

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.

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Materials Science Forum (Volumes 546-549)

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957-960

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May 2007

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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