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Formation of Rare Earth Intermetallics in Al–Cu Cast Alloys

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Light Metals 2020

Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

Abstract

The present research study aimed at investigating the effect of additions of Ce and La rare earth (RE ) elements on intermetallic formation in Al-1.2Si-2.4Cu-0.4 Mg-0.4Fe-0.6Mn-0.15Ti (wt%) alloy, coded B0. Microstructural characteristics were examined under low solidification rate (~0.7°C/s). The result show that two main types of RE -containing intermetallic phases were formed: (i) a grey phase in the form of sludge, with a fixed composition Al21Ti2RE (Ce /La ), and (ii) white RE -containing intermetallic phases (resulting from reaction of the RE (Ce /La ) with Si, Fe, and Cu); the latter exhibited several compositions: Al11RE(Ce /La )3(Cu,Fe)4Si2, Al4Ce 3Si2, Al5La 3Si2 and Al6La 2(Cu,Fe)2Si.

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Acknowledgements

The authors would like to thank Amal Samuel for enhancing the quality of the artwork used in the present study.

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Authors and Affiliations

  1. Mechanical Design and Production Department, Faculty of Engineering, Cairo University, Giza, Egypt

    M. G. Mahmoud

  2. Département des Sciences appliquées, Université du Québec à Chicoutimi, Saguenay, QC, Canada

    A. M. Samuel & F. H. Samuel

  3. General Motors Materials Engineering, 823 Joslyn Ave, Pontiac, MI, 48340, USA

    H. W. Doty

Authors
  1. M. G. Mahmoud
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  2. A. M. Samuel
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  3. H. W. Doty
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  4. F. H. Samuel
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Corresponding author

Correspondence to M. G. Mahmoud .

Editor information

Editors and Affiliations

  1. Rio Tinto, Brisbane, QLD, Australia

    Alan Tomsett

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© 2020 The Minerals, Metals & Materials Society

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Mahmoud, M.G., Samuel, A.M., Doty, H.W., Samuel, F.H. (2020). Formation of Rare Earth Intermetallics in Al–Cu Cast Alloys. In: Tomsett, A. (eds) Light Metals 2020. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-36408-3_34

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