Effects of Rolling and Aging Treatment on Texture and Anisotropy of Fe-Si-Mn Aluminum Alloy Sheet

This paper reports on the optimized parameters of the rolling reduction (RR) and aging treatment (AT) of Fe-Si-Mn aluminum sheets with the aim of reducing the anisotropy and improving the deep drawing performance of the material. Results show that with an increase in the RR, the ultimate tensile strength increases while the elongation decreases. As a result of this treatment, the proportion of Cube texture and Copper texture in specimens is found to decrease gradually and transform into the Brass texture. The transition sequence of texture is found to be Cube→Goss→Brass along the α-orientation line, and the transition path of the Copper texture is found to be Copper→S→Brass along the β-orientation line. The aluminum alloy exhibits the minimum anisotropy (IPA% = 8.74%) and the best deep drawing performance (an Erichsen number of 7.51) obtained in this work when the RR was 29.4%. Subsequently, the AT can effectively reduce the density of dislocations near the grain boundaries and further improve the Erichsen number (from 7.14 to 8.01, an increase of 12.2%). Our results demonstrate that the deep drawing performance of Fe-Si-Mn aluminum sheets can be enhanced effectively via RR and AT; this work provides a design strategy for improving the fracture consistency of the Fe-Si-Mn aluminum alloy.