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Effects of Iron-Rich Intermetallics on Tensile Deformation of Al-Cu 206 Cast Alloys

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Abstract

An investigation has been carried out of the influence of iron on the tensile properties and fracture behavior of a series of Al-Cu 206 cast alloys. Iron contents are explored from 0.15 to 0.5 wt pct, and at two levels of silicon and manganese. The types, morphologies and quantities of the various iron-rich intermetallics are characterized metallographically, and their effects on the tensile properties and the nucleation and growth of cracks during tensile deformation are studied. In addition, oxide films are shown to play an important role in both the nucleation of the iron-rich intermetallics and the formation of tensile cracks.

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Acknowledgments

The authors would like to acknowledge the financial support from the Natural Sciences and Engineering Research Council of Canada (NSERC) and Rio Tinto Alcan, through the NSERC Industry Research Chair in Metallurgy of Aluminum Transformation at the University of Quebec at Chicoutimi. The authors would also like to thank the support of National Research Council of Canada.

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Authors and Affiliations

  1. Department of Applied Science, University of Quebec at Chicoutimi, 555, Boul. de l’Université, Chicoutimi, QC, G7H 2B1, Canada

    K. Liu (Post-doctral Fellow), X. Cao (Adjunct Professor, Research Officer) & X. -G. Chen (Professor)

  2. Aerospace Manufacturing Technology Centre, Institute for Aerospace Research, National Research Council Canada, 5145, Decelles Avenue, Montreal, QC, H3T 2B2, Canada

    X. Cao (Adjunct Professor, Research Officer)

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  1. K. Liu
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  2. X. Cao
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  3. X. -G. Chen
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Correspondence to K. Liu.

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X. Cao: Published with permission of the Crown in Right of Canada.

Manuscript submitted November 7, 2014.

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Liu, K., Cao, X. & Chen, X.G. Effects of Iron-Rich Intermetallics on Tensile Deformation of Al-Cu 206 Cast Alloys. Metall Mater Trans B 46, 1566–1575 (2015). https://doi.org/10.1007/s11663-015-0294-1

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