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A Fourier image analysis technique to quantify the banding behavior of surface texture components in AA6xxx aluminum sheet

机译:傅立叶图像分析技术可量化AA6xxx铝板中表面纹理成分的条带行为

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摘要

Roping is a major disadvantage for the use of AA6xxx aluminum alloys for the production of car body parts. Roping is a strain induced surface roughness, manifesting itself as a series of ridges along the rolling direction, and seems to be related to the macroscopic banding of specific texture components at the surface of the sheet. The present study will quantify this banding tendency. A numerical parameter, the banding severity, will be deduced from the frequency spectrum of an EBSD surface texture plot to quantify the banding tendency of the main texture components. Two AA6xxx aluminum sheets with contrasting industrial qualities will be investigated. It will be shown that the banding severity along the rolling direction is very high for the Cube and Goss texture components in the sheet highly susceptible to roping. The banding severities for the other texture components are not very pronounced. This observation suggests a plausible link between the macroscopic banding of the Cube and Goss texture components and the roping phenomenon.
机译:对于使用AA6xxx铝合金生产车身零件而言,绳索是主要缺点。绳索是由应变引起的表面粗糙度,表现为沿轧制方向的一系列隆起,似乎与片材表面特定纹理成分的宏观带状有关。本研究将量化这种条带化趋势。从EBSD表面纹理图的频谱中得出一个数值参数,即条带严重程度,以量化主要纹理成分的条带趋势。将研究两种具有不同工业品质的AA6xxx铝板。将显示出,对于高度易成绳的板材中的立方和高斯纹理分量,沿轧制方向的带状强度非常高。其他纹理成分的条带严重程度不是很明显。该观察结果表明了多维数据集和高斯纹理分量的宏观带与成绳现象之间的合理联系。

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  • 来源
    《Materials Science and Engineering》 |2010年第23期|p.6239-6243|共5页
  • 作者单位

    K.U. Leuven, Department of Metallurgy and Materials Engineering, Kasteelpark Arenberg 44-box 2450, B-3001 Heverlee, Belgium M2i, Materials Innovation Institute, Mekelweg 2,2628 CD Delft, The Netherlands;

    rnK.U. Leuven, Department of Metallurgy and Materials Engineering, Kasteelpark Arenberg 44-box 2450, B-3001 Heverlee, Belgium;

    rnK.U. Leuven, Department of Metallurgy and Materials Engineering, Kasteelpark Arenberg 44-box 2450, B-3001 Heverlee, Belgium;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    EBSD; aluminum; surface texture; surface roughness;

    机译:EBSD;铝;表面纹理;表面粗糙度;

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