Application of a New Hot Tearing Analysis to Horizontal Direct Chill Cast Magnesium Alloy AZ91

  1. Dipl.-Ing. K. Ehrke Chairman3 and
  2. Prof. Dr. W. Schneider4
  1. John F. Grandfield1,
  2. Cameron J. Davidson2 and
  3. John A. Taylor2

Published Online: 21 APR 2006

DOI: 10.1002/3527607331.ch30

Continuous Casting

Continuous Casting

How to Cite

Grandfield, J. F., Davidson, C. J. and Taylor, J. A. (2000) Application of a New Hot Tearing Analysis to Horizontal Direct Chill Cast Magnesium Alloy AZ91, in Continuous Casting (eds K. Ehrke and W. Schneider), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527607331.ch30

Editor Information

  1. 3

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

  2. 4

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

Author Information

  1. 1

    Cooperative Research Centre for Cast Metals Manufacturing (CAST), CSIRO Manufacturing Science & Technology, The University of Queensland, Australia

  2. 2

    Cooperative Research Centre for Cast Metals Manufacturing (CAST), Department of Mining, Minerals and Materials Engineering, The University of Queensland, Australia

Publication History

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

ISBN Information

Print ISBN: 9783527302833

Online ISBN: 9783527607334

SEARCH

Keywords:

  • continuous casting;
  • new hot tearing analysis;
  • horizontal direct chill cast magnesium alloy AZ91

Summary

The horizontal direct chill (HDC) casting process is a potential production route for magnesium remelt ingot. The ingot may sometimes suffer from surface and centreline hot tearing. In order to control these defects, an analysis of the hot tearing mechanisms based on crack propagation has been developed. The model builds on previous hot tearing models and calculates the pressure contributions acting on a nucleated tear due to feeding and capillary effects, to determine if the void will propagate. The influence of columnar and equiaxed structures on tearing is predicted.