Texture Evolution and Grain Refinement in AA1050 Aluminum Alloy Sheets Asymmetrically Rolled with Varied Shear Directions

Abstract:

Asymmetric rolling is a novel technique for giving rise to an intense plastic shear strain through the sheet thickness. The shear strain also develops shear deformation textures close to the {001}<110> and <111>//ND orientations, among which the latter is the most wanted component for the deep drawability, and give rise to the grain refinement. Previously we analyzed various rolling variables influencing the texture development and grain refinement in aluminum sheets obtained by asymmetric rolling with different roll-radius ratios at the same rotation rate and varied reduction per pass. In this study, AA1050 Al alloy sheets were asymmetrically rolled with a two-high mill of which two rolls had the same diameter, but rotated at different rotation rates, with emphasis on effects of combinations of shear directions in several passes. Textures and microstructures of the rolled sheets were investigated by x-ray diffraction and electron backscattered diffraction analyses.

• Periodical: Key Engineering Materials (Volumes 340-341)
• Pages: 619-626
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.340-341.619
• Online since: June 2007
• Authors: J.K. Lee, Dong Nyung Lee
• Keywords: Aluminium Alloy, Asymmetric Rolling, Grain Refinement, Shear Deformation Texture

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