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Vol.38, No.10, 1345 ~ 1353, 2000

Title

Texture Analysis and Accuracy of the Measurement in Cold Rolled Aluminum Sheets Using Neutron Diffraction

박노진No Jin Park,이문규Moon Kyu Lee,김성진Sung Jin Kim,성백석Baek Seok Seong,이창희Chang Hee Lee,신은주Eun Joo Shin

Abstract

The neutron diffraction method is a powerful technique for the texture investigation owing to its high penetration capability, when compared with the X-ray diffraction method. The complete pole figures can be measured and the whole through-thickness texture can be analysed with the neutron diffraction method. Accordingly, the texture measured by means of the neutron diffraction is successfully applied to evaluate the anisotropic properties of the textured materials. Cold rolling of aluminum sheets was carried out with and without lubrication to investigate the formation of inhomogeneous textures as well as to compare the both measurement techniques (neutron and X-ray). The texture of the cold rolled aluminum sheets mainly resides along β-fiber. However, rolling without lubrication led to the formation of the {001}$lt;110$gt;-orientation at the surface layer which was clearly confirmed by X-ray diffraction. With neutron diffraction the whole through-thickness textures were measured. Accuracy of the measurement and texture analysis was estimated using such parameters as RP_(hkl), RP1_(hkl)-value, PF_(hkl)-dispersion and ΔC. It is proved that the texture analysis by the neutron diffraction is more accurate than that by the X-ray diffraction.

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