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Creative Approaches to Long-Term Recycling of Aluminium Scrap Forming AlSiMgMnCu Alloy with Excellent Mechanical and Microstructural Properties

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Light Metals 2024 (TMS 2024)

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

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Abstract

The present research focuses on the recycling of various aluminium scraps that contain significant levels of silicon, iron, manganese, and copper to create a new aluminium alloy with superior properties. The alloy was designed to exhibit high extrudability and mechanical properties. The alloy was extruded at a low temperature of 430 °C, resulting in a good yield and form free of extrusion flaws. The produced alloy was characterized in three sets: Set 1 without aging (0 h), Set 2. with different aging times (3, 4, and 5 h) at 185 °C, and Set 3. with heat treatment and different aging times (3 h., 4 h., and 5 h.). The mechanical, electrical, and microstructural properties of each set were investigated. The samples in Set 1. had poor mechanical properties but high ductility due to the presence of Cu-enriched intermetallic as the dominant phase. Set 2 samples had the best mechanical properties while preserving high ductility, which was due to the synergy between α-Al (FeMn) Si, Cu-enriched intermetallic, spheroidal AlCuMgSi, and modified silicon particles. Set 3. samples underwent heat treatment at an elevated temperature (530 °C for 3 h) with rapid quenching, then aged for varying times and quenched rapidly, this led to the dissolution of the Cu-enriched intermetallic except for the AlMgCu phase with (Al96Mg3Cu1 and Al94Mg5Cu1, at. %), and the dominant phase was α-Al (FeMn) Si phase, which improved mechanical characteristics. Overall, the ASH01 alloy produced in Set 2 conditions is a promising alloy with strong mechanical characteristics and ductility as a recycled Al-scrap alloy.

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Author information

Authors and Affiliations

  1. Chemistry Department, Faculty of Science, South Valley University, Qena, 83523, Egypt

    Safaa El-Nahas & Hassan M. Salman

  2. Chemistry Labs, The Aluminium Company of Egypt, R&D Nag-Hammadi, Qena, 83642, Egypt

    Ahmed S. Aadli

Authors
  1. Safaa El-Nahas
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  2. Ahmed S. Aadli
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  3. Hassan M. Salman
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Contributions

Conceptualization, methodology, formal analysis, data curation, writing—original draft preparation, Ahmed S. Aadli; supervision, writing—review and editing, visualization, Safaa El-Nahas; supervision and reviewing, Hassan M. Salman. All authors have read and agreed to the published version of the manuscript.

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Correspondence to Ahmed S. Aadli .

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Editors and Affiliations

  1. Oculatus Consulting, Marietta, GA, USA

    Samuel Wagstaff

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El-Nahas, S., Aadli, A.S., Salman, H.M. (2024). Creative Approaches to Long-Term Recycling of Aluminium Scrap Forming AlSiMgMnCu Alloy with Excellent Mechanical and Microstructural Properties. In: Wagstaff, S. (eds) Light Metals 2024. TMS 2024. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-031-50308-5_25

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