About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Melt Processing, Casting and Recycling
|
| Presentation Title |
Recycling Aluminium Post-Consumer Scrap in a Primary Casthouse Into Low-Carbon HPDC Structural Alloys |
| Author(s) |
Alicia Vallejo Olivares, Anna Kisko, Jan Tore Gundersen, Martha Indriyati, Are Bergin, Petter Åsholt |
| On-Site Speaker (Planned) |
Alicia Vallejo Olivares |
| Abstract Scope |
Foundry alloys for High-pressure Die Cast (HPDC) structural automotive components have traditionally relied on primary aluminium. However, incorporating recycled content is essential to meet the increasing demand and sustainability targets in the automotive sector. This study evaluates two alloys, AlSi10MnMg0.1 and AlSi10MnMg0.3, produced at a primary casthouse with 0wt% and 22wt% Post-Consumer Scrap (PCS): twitch (mixed automotive scrap) or taint tabor (old sheet scrap). The results showed that the recycled content did not affect melt quality (inclusions), but it raised the Fe and Cu concentration. This did not substantially affect the mechanical properties, except for slightly lower bending angles in T6 condition. However, the batch with the highest Cu content exhibited increased corrosion susceptibility. These findings suggest that structural HPDC alloys with 20wt% PCS and CO₂ footprints near 3.0 kg CO₂/kg Al are achievable without compromising mechanical integrity, whilst corrosion is more sensitive to impurity levels. More homogeneous scrap streams are recommended to minimise the risks linked to compositional variability. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Recycling and Secondary Recovery, Aluminum, Sustainability |