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Controlling the plastic anisotropy in asymmetrically rolled aluminium sheets

机译:控制不对称轧制铝板中的塑性各向异性

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The formability of metals depends on the crystallographic texture produced during thermo-mechanical processing. The crystallographic orientation of the deformed grains results from the applied deformation path. Asymmetric rolling is a new process that is expected to improve the formability of rolled aluminium sheets by introducing an intense shear deformation and an associated shear texture. Asymmetric rolling was applied to aluminium alloy AA6016 with roll diameters ratio of 1.5. Both full constraints and grain interaction models are employed to investigate the evolution of texture during conventional and asymmetric rolling processes. The superior planar and normal anisotropy values of asymmetrically rolled and annealed sheet over the conventionally produced one are interpreted in terms of differences in the deformed microstructures and the ensuing rolling and recrystallization textures.
机译:金属的可成形性取决于在热机械加工过程中产生的晶体织构。变形晶粒的晶体学取向是由所施加的变形路径引起的。非对称轧制是一种新工艺,有望通过引入强烈的剪切变形和相关的剪切织构来改善轧制铝板的可成形性。对辊径比为1.5的铝合金AA6016进行不对称轧制。完全约束和颗粒相互作用模型都用于研究常规和非对称轧制过程中织构的演变。用变形后的微观结构以及随后产生的轧制和再结晶织构的差异来解释非对称轧制和退火板优于常规生产的平面和法向各向异性值。

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