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Relationships Between Solidification Parameters in A319 Aluminum Alloy

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Abstract

The design of high-performance materials depends on a comprehensive understanding of the alloy-specific relationships between solidification and properties. However, the inconsistent use of a particular solidification parameter for presenting materials characterization in the literature impedes inter-study comparability and the interpretation of findings. Therefore, there is a need for accurate expressions relating the solidification parameters for each alloy. In this study, A319 aluminum alloy castings were produced in a permanent mold with various preheating temperatures in order to control metal cooling. Analysis of the cooling curve for each casting enabled the identification of its liquidus, Al-Si eutectic, and solidus temperatures and times. These values led to the calculation of the primary solidification rate, total solidification rate, primary solidification time, and local solidification time for each casting, which were related to each other as well as to the average casting SDAS and material hardness. Expressions for each of their correlations have been presented with high coefficients of determination, which will aid in microstructural prediction and casting design.

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Acknowledgments

The authors are grateful to the Natural Sciences and Research Council of Canada (NSERC) for their financial support and to Thomas Warren of Gamma Foundries Inc. for chemical analysis of samples. Further, the authors are thankful to Alan Machin and the members of the Centre for Near-net-shape Processing of Materials (CNPM) at Ryerson University for assistance.

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  1. Centre for Near-Net-Shape Processing of Materials, Ryerson University, 101 Gerrard Street East, Toronto, ON, M5B2K3, Canada

    E. Vandersluis & C. Ravindran

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  1. E. Vandersluis
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  2. C. Ravindran
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Correspondence to E. Vandersluis.

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Vandersluis, E., Ravindran, C. Relationships Between Solidification Parameters in A319 Aluminum Alloy. J. of Materi Eng and Perform 27, 1109–1121 (2018). https://doi.org/10.1007/s11665-018-3184-2

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  • DOI: https://doi.org/10.1007/s11665-018-3184-2

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