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Through-Thickness Texture Gradients in Cold-Rolled Aluminum

机译:冷轧铝的全厚度纹理梯度

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摘要

The through-thickness texture variations in approx 40 pct cold-rolled polycrystalline aluminum were studied using X-ray diffraction and the electron backscattering pattern (EBSP) technique. The influence of the roll-gap geometry and of sequences of small and intermediate draughts on the development of deformation textures in multipass rolling was considered. It was found that similar textures were formed near the surface and in the central layers of all specimens, while, in the intermediate layers of different plates, different textures were observed. Small draughts gave rise to the shear texture in the intermediate layers, while no pronounced shear texture was revealed anywhere through the thickness of plates rolled with intermediate draughts. It was found that small-draught rolling only has a pronounced effect on the texture if it accounts for a significant strain in the rolling schedule. It was found, furthermore, that nonuniformity of the initial recrystallization texture may be retained in the texture after approx 40 pct rolling.
机译:使用X射线衍射和电子反向散射图样(EBSP)技术研究了大约40 pct冷轧多晶铝的厚度变化。考虑了间隙几何形状以及中小型牵伸序列对多道次轧制中变形织构发展的影响。发现在所有样品的表面附近和中心层中形成相似的纹理,而在不同板的中间层中观察到不同的纹理。小吃水会在中间层产生剪切纹理,而在中间通风的轧制板厚度上,任何地方都没有显着的剪切纹理。已经发现,小通风轧制如果在轧制时间表中引起很大的应变,则仅对织构具有显着影响。此外,发现在约40%的轧制之后,初始再结晶织构的不均匀性可以保留在织构中。

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