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Microstructure and Tensile Strength of an Al-Si-Fe-V Alloy: Vanadium and Solidification Thermal Parameters as Recycling Strategies

Author

Listed:
  • Cássio Silva

    (Department of Manufacturing and Materials Engineering, University of Campinas–UNICAMP, Campinas 13083-860, SP, Brazil)

  • André Barros

    (Department of Manufacturing and Materials Engineering, University of Campinas–UNICAMP, Campinas 13083-860, SP, Brazil)

  • Adilson Vitor Rodrigues

    (Department of Manufacturing and Materials Engineering, University of Campinas–UNICAMP, Campinas 13083-860, SP, Brazil
    Federal Institute of Education, Science and Technology of São Paulo, IFSP, Bragança Paulista 12903-000, SP, Brazil)

  • Rafael Kakitani

    (Department of Manufacturing and Materials Engineering, University of Campinas–UNICAMP, Campinas 13083-860, SP, Brazil)

  • Thiago Soares

    (Department of Manufacturing and Materials Engineering, University of Campinas–UNICAMP, Campinas 13083-860, SP, Brazil)

  • Amauri Garcia

    (Department of Manufacturing and Materials Engineering, University of Campinas–UNICAMP, Campinas 13083-860, SP, Brazil)

  • Noé Cheung

    (Department of Manufacturing and Materials Engineering, University of Campinas–UNICAMP, Campinas 13083-860, SP, Brazil)

Abstract

One of the greatest challenges facing the recycling of Al-based alloys is handling Fe incorporation. The formation of Fe-rich phases has negative impacts on the mechanical behavior and may limit the usage of recycled alloys. In this context, V addition is regarded as a potential solution since it can inhibit the formation of such phases. However, the microstructure evolution of V-modified Al-based alloys is not fully understood, especially when different solidification cooling regimes are considered. Thus, this work investigates the microstructure and tensile properties of an Al-7Si-1Fe [wt.%] alloy modified with a 0.5 wt.%V addition. Directionally solidified samples were produced and subjected to microstructure analysis and tensile tests. It was found that the addition of V reduces the fraction of β-AlFeSi particles because of the formation of new V-rich phases. This was determinant to improve the tensile properties for faster cooling conditions during solidification. For moderate and slow cooling regimes, however, the V-containing alloy had a less favorable mechanical behavior due to the formation of larger β-AlFeSi particles. Finally, quantitative relationships are proposed for the prediction of tensile properties from microstructural parameters using multiple linear regression analysis.

Suggested Citation

  • Cássio Silva & André Barros & Adilson Vitor Rodrigues & Rafael Kakitani & Thiago Soares & Amauri Garcia & Noé Cheung, 2022. "Microstructure and Tensile Strength of an Al-Si-Fe-V Alloy: Vanadium and Solidification Thermal Parameters as Recycling Strategies," Sustainability, MDPI, vol. 14(21), pages 1-20, October.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:21:p:13859-:d:952843
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    References listed on IDEAS

    as
    1. Tufan Gürkan Yılmaz & Mustafa Tüfekçi & Fatih Karpat, 2017. "A Study of Lightweight Door Hinges of Commercial Vehicles Using Aluminum Instead of Steel for Sustainable Transportation," Sustainability, MDPI, vol. 9(10), pages 1-9, September.
    2. Anders E.W. Jarfors & Andong Du & Gegan Yu & Jinchuan Zheng & Kaikun Wang, 2020. "On the Sustainable Choice of Alloying Elements for Strength of Aluminum-Based Alloys," Sustainability, MDPI, vol. 12(3), pages 1-12, February.
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