Development of Residual Stresses and Texture in Drawn Copper Tubes

Authors

  • Adele Carradò,

    Corresponding author
    1. Institut de Physique et Chimie des Matériaux de Strasbourg – CNRS-UMR – 7504, 23, rue du Loess BP 43, 67034 Strasbourg, France
    • Institute of Metallurgy, Clausthal University of Technology, Robert -Koch -Str. 42, 38678 Clausthal-Zellerfeld, Germany
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  • Heinz-Guenter Brokmeier,

    1. Clausthal University of Technology (IWW-TEXMAT), Agricolastr. 6, D-38678 Clausthal-Zellerfeld, Germany
    2. Max-Planck-Str. 1, D-21502 Geesthacht, Germany
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  • Thilo Pirling,

    1. Institut Laue-Langevin, 6, rue Jules Horowitz, 38042 Grenoble, France
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  • Robert Charles Wimpory,

    1. Helmholtz Zentrum Berlin, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
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  • Norbert Schell,

    1. Helmholtz-Zentrum Geesthacht (HZG), Max-Planck-Str. 1, D-21502 Geesthacht, Germany
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  • Heinz Palkowski

    Corresponding author
    1. Institut de Physique et Chimie des Matériaux de Strasbourg – CNRS-UMR – 7504, 23, rue du Loess BP 43, 67034 Strasbourg, France
    2. Institute of Metallurgy, Clausthal University of Technology, Robert -Koch -Str. 42, 38678 Clausthal-Zellerfeld, Germany
    • Institute of Metallurgy, Clausthal University of Technology, Robert -Koch -Str. 42, 38678 Clausthal-Zellerfeld, Germany
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  • We acknowledge the support of the AiF (Arbeitsgemeinschaft Industrieller Forschungsvereinigungen – Community of Industrial Research) running project titled, “Influence of production parameters on residual stresses and dimension tolerances for drawing of tubes”; Kabel Metal Europe for supporting us with the copper tubes; and Égide (Centre français pour l'accueil et les échanges internationaux) French–German projects (17833RH and 25090RH). Additionally, we thank the Hamburger Synchrotronstrahlungslabor HASYLAB at Deutsches Elektronen Synchrotron DESY, a member of the Helmholtz Association (HGF), and the Institut Laue-Langevin for the provision of beam time and the good technical support we received during the measurements.

Abstract

The residual stress state and the texture in Cu-tubes, drawn without a plug under controlled laboratory conditions, are presented. Neutron stress determination confirms a stress gradient from the outer to the inner surface of the tube walls. High energy X-rays were used to analyze the texture gradient around the perimeter of the tubes as well as over the wall thickness. Anisotropic flow during tube processing results in texture variations described by ODF-analysis.

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