Recycling Aluminum Alloys for the Automotive Industry: Breaking the Source-Sink Paradigm

19 Pages Posted: 17 Aug 2023

See all articles by Patrick Krall

Patrick Krall

Montanuniversität Leoben - Chair of Nonferrous Metallurgy

Irmgard Weißensteiner

Montanuniversität Leoben - Christian Doppler Laboratory for Advanced Aluminum Alloys

Stefan Pogatscher

Montanuniversität Leoben - Chair of Nonferrous Metallurgy

Abstract

Aluminum is a major construction material in light-weight vehicles. Today, recycling the aluminum content of end-of-life vehicles (ELVs) is based on dilution with primary metal and downcycling to cast engine blocks. The importance of the latter, however, is expected to lessen due to vehicle electrification. In this study we posit that by altering the common classification of aluminum alloys, it may become possible to deploy ELV scrap as a direct source for upcycling into new wrought alloys. We demonstrate this by examining possible compositions of an average EU car, a pickup truck and an electric car, and the corresponding dismantling scenarios. We processed the associated alloys to cold-rolled sheets, mechanically tested these and studied their microstructure. Our results suggest that wrought alloys with promising properties can be produced directly from ELV scrap to accommodate both the increasing importance of wrought alloys and the passing of cast engine blocks as sink.

Keywords: Recycling, End-of-live vehicles, Automotive aluminum alloys, Secondary wrought alloys

Suggested Citation

Krall, Patrick and Weißensteiner, Irmgard and Pogatscher, Stefan, Recycling Aluminum Alloys for the Automotive Industry: Breaking the Source-Sink Paradigm. Available at SSRN: https://ssrn.com/abstract=4544401 or http://dx.doi.org/10.2139/ssrn.4544401

Patrick Krall (Contact Author)

Montanuniversität Leoben - Chair of Nonferrous Metallurgy ( email )

Leoben
Austria

Irmgard Weißensteiner

Montanuniversität Leoben - Christian Doppler Laboratory for Advanced Aluminum Alloys

Leoben, 8700
Austria

Stefan Pogatscher

Montanuniversität Leoben - Chair of Nonferrous Metallurgy ( email )

Leoben
Austria

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