Tensile Behaviour of DC-cast AA5182 in Solid and Semi-solid State

  1. Dipl.-Ing. K. Ehrke Chairman2 and
  2. Prof. Dr. W. Schneider3
  1. W.M. van Haaften,
  2. W.H. Kool and
  3. L. Katgerman

Published Online: 21 APR 2006

DOI: 10.1002/3527607331.ch35

Continuous Casting

Continuous Casting

How to Cite

van Haaften, W.M., Kool, W.H. and Katgerman, L. (2000) Tensile Behaviour of DC-cast AA5182 in Solid and Semi-solid State, in Continuous Casting (eds K. Ehrke and W. Schneider), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527607331.ch35

Editor Information

  1. 2

    ALUMINIUM Essen GmbH, Sulterkamp 71, D-45356 Essen, Germany

  2. 3

    VAW Aluminium AG, Forschung und Entwicklung, Georg-von-Boeselager-Str. 25, D-53117 Bonn, Germany

Author Information

  1. Laboratory of Materials, Delft University of Technology, Rotterdamseweg 137, 2628 AL, Delft, The Netherlands

Publication History

  1. Published Online: 21 APR 2006
  2. Published Print: 29 NOV 2000

ISBN Information

Print ISBN: 9783527302833

Online ISBN: 9783527607334

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Keywords:

  • continuous casting;
  • tensile behavior of DC-cast AA5182 in solid and semi-solid state

Summary

Hot tearing is still one of the major problems during DC casting of aluminium alloys. It may result in cracks running through the entire ingot, which require costly remelting and cause loss of productivity. Numerical models are developed to simulate and improve the casting process but there is a lack of mechanical data of the alloys, especially at elevated temperatures. Therefore tensile tests were carried out with AA5182 at high temperature including the semisolid range. A mathematical description was found for the subsolidus temperatures and this description could be extended to above-solidus temperatures by assuming that the constitutive behaviour is determined by the solid network. This was done by considering not only the fraction liquid but also the percentage of grain boundary area covered by this liquid phase. Taking this approach, the mechanical behaviour of the alloys at semi-solid temperature can be described, at least for the low liquid fractions during which hot tearing occurs.