2007 | Jan Bohlen, Marcus R. Nüernberg, Jeremy Senn, Dietmar Letzig, Sean R. Agnew
This paper investigates the rolling textures and anisotropy of magnesium alloys containing different levels of zinc and rare earth (RE) additions. The study examines six magnesium alloys, including conventional alloys and those with RE additions, to understand how these additions affect the texture and mechanical properties. The results show that the basal pole intensity aligned with the sheet normal direction is lower in RE-containing alloys compared to conventional alloys. The textures of the RE-containing alloys are weaker and have a broader distribution of basal poles toward the transverse direction (TD) compared to the rolling direction (RD). The mechanical properties, such as yield strength and uniform elongation, are also influenced by the textures. The RE-containing alloys exhibit higher yield stresses and r-values along the RD, while the TD shows lower stress and higher elongation. The anisotropy of the yield and flow strengths is reversed, and the planar anisotropy is reduced (r ~ 1) compared to conventional alloys. These findings suggest that the addition of RE elements can improve the formability of magnesium sheets under certain conditions, particularly when thinning is required. The study also discusses the potential mechanisms behind the texture randomization and the impact on mechanical properties, including particle-stimulated nucleation (PSN) during recrystallization.This paper investigates the rolling textures and anisotropy of magnesium alloys containing different levels of zinc and rare earth (RE) additions. The study examines six magnesium alloys, including conventional alloys and those with RE additions, to understand how these additions affect the texture and mechanical properties. The results show that the basal pole intensity aligned with the sheet normal direction is lower in RE-containing alloys compared to conventional alloys. The textures of the RE-containing alloys are weaker and have a broader distribution of basal poles toward the transverse direction (TD) compared to the rolling direction (RD). The mechanical properties, such as yield strength and uniform elongation, are also influenced by the textures. The RE-containing alloys exhibit higher yield stresses and r-values along the RD, while the TD shows lower stress and higher elongation. The anisotropy of the yield and flow strengths is reversed, and the planar anisotropy is reduced (r ~ 1) compared to conventional alloys. These findings suggest that the addition of RE elements can improve the formability of magnesium sheets under certain conditions, particularly when thinning is required. The study also discusses the potential mechanisms behind the texture randomization and the impact on mechanical properties, including particle-stimulated nucleation (PSN) during recrystallization.