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Precipitation Kinetics and Evaluation of the Interfacial Mobility of Precipitates in an AlSi7Cu0.5Mg0.3 Cast Alloy

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TMS 2020 149th Annual Meeting & Exhibition Supplemental Proceedings

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

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Abstract

Heat treatment of cast aluminum alloy parts enables the formation and distribution of nano-sized precipitates through an optimum sequence including solutionizing, quenching, and artificial aging. Quaternary alloys are particularly challenging, and the present study aims to understand and outline the precipitation kinetics in the foundry AlSi7Cu0.5Mg0.3 alloy. Using techniques like differential scanning calorimetry (DSC), transmission electron microscopy (TEM), LKSZ kinetic equations, and microhardness testing, the precipitation kinetics was quantitatively characterized. Activation energies of the phase transformations were extracted using the Kissinger analysis of non-isothermal DSC runs conducted at different stationary heating rates. Finally, a first evaluation of the interfacial mobility of precipitates in this alloy was made using the developed methodology.

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Acknowledgements

The authors would like to thank the Natural Sciences and Engineering Research Council of Canada (NSERC) for financial support (NSERC Grant RDCPJ 468550—548 14) and also to Montupet and Rio Tinto ARDC teams for their collaboration. The authors are also grateful to J.-P. Masse from (CM)2 at École Polytechnique de Montreal for his strong collaboration in conducting the TEM observations and Daniel Marcotte, Nathalie Moisan, Hervé Plancke, and Dr. Marc Choquette for sharing their valuable knowledge and technical expertise.

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Authors and Affiliations

  1. Department of Mining, Metallurgy and Materials Engineering, Aluminum Research Center—REGAL, Laval University, 1065, ave de la Médecine, Québec, G1V 0A6, Canada

    Pierre Heugue & Daniel Larouche

  2. Rio Tinto, Arvida Research and Development Centre, 1955, Mellon Blvd, Saguenay, Québec, G7S 4K8, Canada

    Francis Breton

  3. Linamar Corporation—The Center, 700 Woodlawn Road West, Guelph, ON, N1K 1G4, Canada

    Rémi Martinez

  4. Department of Applied Sciences, The University of Quebec at Chicoutimi, 555, boul. de l’Université, Saguenay, Québec, G7H 2B1, Canada

    X. Grant Chen

  5. Linamar Montupet Light Metal Division, 3, rue de Nogent, 60290, Laigneville, France

    Denis Massinon

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  1. Pierre Heugue
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  2. Daniel Larouche
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  3. Francis Breton
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  4. Rémi Martinez
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  5. X. Grant Chen
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  6. Denis Massinon
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Correspondence to Daniel Larouche .

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    Heugue, P., Larouche, D., Breton, F., Martinez, R., Chen, X.G., Massinon, D. (2020). Precipitation Kinetics and Evaluation of the Interfacial Mobility of Precipitates in an AlSi7Cu0.5Mg0.3 Cast Alloy. In: TMS 2020 149th Annual Meeting & Exhibition Supplemental Proceedings. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-36296-6_167

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