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The Role of Rare Earth Elements in Structure and Property Control of Magnesium Die Casting Alloys

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Essential Readings in Magnesium Technology

Abstract

The performance of magnesium die cast parts is governed by the microstructure and by the distribution of structural features which occur as a result of the chemical composition and processing history of the alloy. The elevated temperature properties, especially mechanical strength under creep conditions, are primarily determined by the grain structure, the elements in solid solution and the effectiveness of second phase particles in stabilizing the grain boundaries. The current emphases in alloy development focus on the utilization of elements with low solubility in the solid state, leading to the formation of stable precipitates during solidification. Such elements include the rare earths, as well as silicon, strontium and calcium. A detailed analysis of the various microstructural features and attributes is given for a new family of rare earth-containing alloys. The optimization of alloy composition is addressed in terms of blending advantageous microstructural characteristics with phase equilibria considerations.

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Author information

Authors and Affiliations

  1. Hydro Aluminium R&D Centre, Hydro Magnesium Competence Centre, N-3908, Porsgrunn, Norway

    Dr. Per Bakke & Dr. Håkon Westengen

Authors
  1. Dr. Per Bakke
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  2. Dr. Håkon Westengen
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Editor information

Editors and Affiliations

  1. Materials Science Division, U.S. Army Research Office (ARO), USA

    Suveen N. Mathaudhu B.S.E., Ph.D. (Program Manager for Synthesis and Processing of Materials, Adjunct Assistant Professor) (Program Manager for Synthesis and Processing of Materials, Adjunct Assistant Professor)

  2. Department of Materials Science and Engineering, North Carolina State University, USA

    Suveen N. Mathaudhu B.S.E., Ph.D. (Program Manager for Synthesis and Processing of Materials, Adjunct Assistant Professor) (Program Manager for Synthesis and Processing of Materials, Adjunct Assistant Professor)

  3. The Ohio State University (OSU), Columbus, Ohio, USA

    Alan A. Luo (Professor of Materials Science and Engineering and Professor of Integrated Systems Engineering, Vice Chair of TMS Light Metals Division and SAE Materials Division and the Chair of SAE Non-Ferrous Metals Committee) (Professor of Materials Science and Engineering and Professor of Integrated Systems Engineering, Vice Chair of TMS Light Metals Division and SAE Materials Division and the Chair of SAE Non-Ferrous Metals Committee)

  4. IND LLC, Canada

    Neale R. Neelameggham (Guru) (Guru)

  5. Pacific Northwest National Laboratory (PNNL), Washington, USA

    Eric A. Nyberg B.S., M.S. (Chief Engineer) (Chief Engineer)

  6. New Materials & Energy Unit at the research and technology center, European Space Agency (ESA-ESTEC), Netherlands

    Wim H. Sillekens Ph.D. (project manager) (project manager)

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© 2016 The Minerals, Metals & Materials Society

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Bakke, P., Westengen, H. (2016). The Role of Rare Earth Elements in Structure and Property Control of Magnesium Die Casting Alloys. In: Mathaudhu, S.N., Luo, A.A., Neelameggham, N.R., Nyberg, E.A., Sillekens, W.H. (eds) Essential Readings in Magnesium Technology. Springer, Cham. https://doi.org/10.1007/978-3-319-48099-2_50

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