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Validation of Predicted Residual Stresses within Direct Chill Cast Magnesium Alloy Slab

Authors
  • Turski, Mark1, 2
  • Paradowska, Anna3, 4
  • Zhang, Shu-Yan4
  • Mortensen, Dag5
  • Fjaer, Hallvard5
  • Grandfield, John6, 7
  • Davis, Bruce8
  • DeLorme, Rick8
  • 1 Magnesium Elektron, Manchester, M27 8LJ, U.K. , Manchester (United Kingdom)
  • 2 The Open University, Materials Engineering, Milton Keynes, MK7 6AA, U.K. , Milton Keynes (United Kingdom)
  • 3 The Bragg Institute, Australian Nuclear Science and Technology Organisation (ANSTO), Menei, NSW, 2234, Australia , Menei (Australia)
  • 4 ISIS Facility, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Didcot, Oxfordshire, OX11 0QX, U.K. , Didcot (United Kingdom)
  • 5 Institute for Energy Technology, Department of Process and Fluid Flow Technology, Kjeller, N-2027, Norway , Kjeller (Norway)
  • 6 Grandfield Technology Pty Ltd, Moreland West, VIC, 3055, Australia , Moreland West (Australia)
  • 7 Swinburne University of Technology, Faculty of Engineering and Industrial Science, Hawthorn, VIC, 3122, Australia , Hawthorn (Australia)
  • 8 Magnesium Elektron North America, Madison, IL, 62060, USA , Madison (United States)
Type
Published Article
Journal
Metallurgical and Materials Transactions A
Publisher
Springer US
Publication Date
Feb 23, 2012
Volume
43
Issue
5
Pages
1547–1557
Identifiers
DOI: 10.1007/s11661-011-1077-1
Source
Springer Nature
Keywords
License
Yellow

Abstract

A significant level of cold cracking has been observed within direct chill (DC) cast, high-strength magnesium alloy Elektron WE43. These cracks have been attributed to the formation of significant residual stresses during casting. A finite-element modeling (FEM) code, which is called ALSIM, has been used to predict the residual stress within the DC-cast slab. Verification of the predicted residual stress field within an 870 × 315-mm sized slab has been carried out using neutron diffraction measurements. Given that measurements in such large-scale components using diffraction measurements are particularly challenging and expensive, the efficient use of neutron diffraction measurements is emphasized. This has included the use of sectioning, allowing the residual stress within the slab to be mapped in detail.

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