Aluminium recycling: A critical review of iron-bearing intermetallics in aluminium alloys

IF 7.1 3区材料科学 Q1 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY

Materials Today Sustainability Pub Date : 2025-04-11 DOI:10.1016/j.mtsust.2025.101119

H.R. Kotadia , N. Bareker , M.H. Khan , J.I. Ahuir-Torres , A. Das

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Abstract

This review provides a comprehensive analysis of the current understanding of Fe-bearing intermetallic compounds (IMCs) in cast and wrought aluminium (Al) alloys, also covering their significance in recycling and sustainable materials development. It explores the various types of Fe-bearing IMCs, their nucleation and growth mechanisms under diverse processing conditions, with a particular focus on chemical, physical, and thermal modification strategies aimed at mitigating their detrimental effects. The review further examines the impact of these IMCs on defect formation, mechanical performance, and corrosion resistance. While Al recycling offers substantial energy savings (up to 95 %), the accumulation of impurities, notably Fe. This work provides practical insights to guide materials scientists and engineers in optimising processing conditions for Al alloys with elevated Fe content or those derived from recycled scrap. Understanding the behaviour and control of Fe-bearing IMCs is essential for improving alloy performance and advancing the sustainable production of Al.

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铝回收：铝合金中含铁金属间化合物的评述

本文综述了目前对铸铝合金和变形铝合金中含铁金属间化合物（IMCs）的认识，以及它们在材料循环利用和可持续发展中的重要意义。它探讨了不同类型的含铁IMCs及其在不同加工条件下的形核和生长机制，特别关注旨在减轻其有害影响的化学，物理和热改性策略。本文进一步探讨了这些IMCs对缺陷形成、机械性能和耐腐蚀性的影响。虽然铝回收提供了大量的能源节约（高达95%），但杂质的积累，特别是铁。这项工作提供了实际的见解，指导材料科学家和工程师在优化加工条件与高铁含量的铝合金或那些来自回收废料。了解含铁IMCs的行为和控制对提高合金性能和推进铝的可持续生产至关重要。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Today Sustainability Multiple-

CiteScore

5.80

自引率

6.40%

发文量

174

审稿时长

32 days

期刊介绍： Materials Today Sustainability is a multi-disciplinary journal covering all aspects of sustainability through materials science. With a rapidly increasing population with growing demands, materials science has emerged as a critical discipline toward protecting of the environment and ensuring the long term survival of future generations.