Microstructural and texture changes in severely deformed aluminum alloys

• Published in: Materials characterization Vol. 62; no. 2; pp. 228 - 236
• Main Authors: Sidor, Jurij J., Petrov, Roumen H., Kestens, Leo A.I.
• Format: Journal Article
• Language: English
• Published: Elsevier Inc 01-02-2011
• Subjects: Alloys; Aluminum; Cold rolling; Deformation; Recrystallization; Reduction; Strain; Surface layer; Texture; Aluminum; Deformation; Recrystallization
• ISSN: 1044-5803; 1873-4189
• DOI: 10.1016/j.matchar.2010.12.004

Qualitative and quantitative texture changes were investigated in a severely deformed aluminum alloy of the 5xxx series. The as-cast material was subjected to cold rolling with a maximum von Mises equivalent strain of 5.15. After recrystallization at 550
°C, unusual textures were observed in the rolled materials with a thickness reduction of more than 97%. The influence of both strain amplitude and strain mode on the development of the deformation and recrystallization textures was discussed based on experimental data and results of crystal plasticity calculations.
► Unusual recrystallization (RX) textures evolved in severely deformed (SD) Al sheets. ► Increasing the rolling reduction causes qualitative texture changes in RX sheets. ► RX is controlled by particle stimulated nucleation after severe rolling reduction. ► Recrystallization occurs on microstructural sites with low stored energy.