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Improved Iron-Tolerance in Recycled Aluminum Alloys via Direct Strip Casting Process

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posted on 2025-04-07, 05:44 authored by Lu JiangLu Jiang, Ross MarceauRoss Marceau, Thomas DorinThomas Dorin
AbstractRecycled aluminum alloys are pivotal for sustainable manufacturing, offering strength, durability, and environmental advantages. However, the presence of iron (Fe) impurities poses a major challenge, undermining their properties and recyclability. Conventional manufacturing processes result in coarse Fe-rich intermetallic compounds that limit the tolerance of Fe content and negatively influence performance of advanced aluminum alloys. To address this, rapid solidification techniques like direct strip casting have been explored. In this work, a detailed study of the strip cast microstructure was conducted by scanning electron microscopy, electron backscattered diffraction and atom probe tomography. Our results reveal that alloys produced by direct strip casting exhibit significantly refined microstructures and are free from coarse Fe-rich intermetallics, thereby retaining the majority of Fe in solid solution. These findings indicate that strip casting significantly enhances Fe-tolerance in aluminum alloys, making it an attractive process for future aluminum recycling, with implications for sustainable high-performance applications. Graphical Abstract

History

Journal

Journal of Sustainable Metallurgy

Volume

10

Pagination

435-441

Location

Berlin, Germany

Open access

  • Yes

ISSN

2199-3823

eISSN

2199-3831

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Issue

2

Publisher

Springer

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