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A Combined Numerical–Experimental Approach to Quantify the Thermal Contraction of A356 During Solidification

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Abstract

A process for generating thermal contraction coefficients for use in the solidification modeling of aluminum castings is presented. Sequentially coupled thermal-stress modeling is used in conjunction with experimentation to empirically generate the thermal contraction coefficients for a strontium-modified A356 alloy. The impact of cooling curve analysis on the modeling procedure is studied. Model results are in good agreement with experimental findings, indicating a sound methodology for quantifying the thermal contraction. The technique can be applied to other commercially relevant aluminum alloys, increasing the utility of solidification modeling in the casting industry.

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Acknowledgements

The authors gratefully acknowledge the assistance of C. Reilly, J. Kantharaju, and S. Bhatia for their help in conducting the casting trials and developing the model, as well as E. Smith for constructive feedback on the manuscript text. This research was funded by the Natural Sciences and Engineering Research Council of Canada.

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Authors and Affiliations

  1. Department of Materials Engineering, The University of British Columbia, Vancouver, V6T 1Z4, Canada

    J. P. Macht & D. M. Maijer

  2. Department of Materials Science and Engineering, McMaster University, Hamilton, L8S 4L7, Canada

    A. B. Phillion

Authors
  1. J. P. Macht
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  2. D. M. Maijer
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  3. A. B. Phillion
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Correspondence to A. B. Phillion.

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Manuscript submitted August 30, 2016.

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Macht, J.P., Maijer, D.M. & Phillion, A.B. A Combined Numerical–Experimental Approach to Quantify the Thermal Contraction of A356 During Solidification. Metall Mater Trans A 48, 3370–3376 (2017). https://doi.org/10.1007/s11661-017-4097-7

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  • DOI: https://doi.org/10.1007/s11661-017-4097-7

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