| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Alloys: Development and Manufacturing
|
| Presentation Title |
Mechanical and Corrosion Testing of High Recycled Content Aluminum Automotive Body Sheet Alloys |
| Author(s) |
Alissa Tsai, Minju Kang, Evan Huang, Chal Park, John Allison, Daniel Ross Cooper |
| On-Site Speaker (Planned) |
Alissa Tsai |
| Abstract Scope |
Increasing recycled content reduces greenhouse gas emissions from aluminum production, but recycling end-of-life vehicle (ELV) scrap into high-value automotive body sheet (ABS) is challenging due to high contaminant levels in the scrap and the low tolerance to such contaminants in the ABS alloys. Four high recycled content (HRC) alloys are developed, based on compositions of existing baseline aluminum 5xxx (high and low magnesium) and 6xxx (high and low copper) ABS alloys, but with increased tolerance to the contaminants found in the ELV scrap. This article focusses on mechanical and corrosion testing of the HRC alloys using tensile and VDA bendability tests and ASTM G67 and ISO11846-B intergranular corrosion tests. The HRC alloys showed increased ultimate tensile and yield strengths compared to baseline alloys, similar ductility, but reduced bendability. The 5xxx HRC alloys were resistant to intergranular corrosion, while the 6xxx HRC alloys showed accelerated corrosion but typically within acceptable limits. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, Recycling and Secondary Recovery, Shaping and Forming |