Effect of reduction ratio on annealing texture and r-value directionality for a cold-rolled Al–5% Mg alloy

• Published in: Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2009-08, Vol.519 (1), p.77-87
• Main Authors: Choi, Shi-Hoon, Choi, Jae-Kwon, Kim, Hyoung-Wook, Kang, Seok-Bong
• Format: Article
• Language: English
• Subjects: Annealing; Applied sciences; Cold-rolling; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Heat treatment; Materials science; Metals. Metallurgy; Other heat and thermomechanical treatments; Physics; Production techniques; r-Value; Thermomechanical treatment; Treatment of materials and its effects on microstructure and properties; Volume fraction; VPSC
• ISSN: 0921-5093; 1873-4936
• DOI: 10.1016/j.msea.2009.05.063

The evolution of the macrotexture and r-value directionality of cold-rolled Al–5% Mg alloys during annealing at various temperatures was investigated to seek an optimum annealing condition to improve the formability of TRBs. The change of volume fractions for the typical texture components of Al–5% Mg alloys was calculated using a misorientation approach in 3-D Euler space. A visco-plastic self-consistent (VPSC) polycrystal model was used to predict r-value directionality of the cold-rolled and annealed Al–5% Mg alloys. The electron backscatter diffraction (EBSD) technique was used to investigate a rapid change of the initial deformation texture in the specimen deformed by a reduction of 9% during annealing. The results showed that an optimum annealing temperature for achieving the low planar anisotropy was strongly dependent on the rolling reduction ratio.