Direct recycling of 1050 aluminum alloy scrap material mixed with 6060 aluminum alloy chips by hot extrusion
Research output: Journal contributions › Journal articles › Research › peer-review
Authors
In this paper, a method for the direct recycling of aluminum scrap by hot extrusion is investigated. 1050 aluminum alloy material in the form of pins remained as scrap after a lateral extrusion process and was mixed with 6060 aluminum alloy chips resulting from a turning operation. Contrary to the conventional method of re-melting aluminum scrap to produce secondary aluminum, this aluminum scrap+chip mixture was cold compacted into billets and hot extruded at 500°C to full rectangular profiles. The extruded profiles were examined by tensile tests and microstructural investigations and compared to the conventionally extruded profiles from as-cast material. It was shown that not only the aluminum chips but also the aluminum scrap material can be recycled directly by hot extrusion, which requires only ~10% of the energy required for recycling by re-melting. Also, the profiles extruded from billets containing 1050 aluminum alloy scrap with and without cooling lubricant were compared and a deteriorating effect was determined.
| Original language | English |
|---|---|
| Journal | International Journal of Material Forming |
| Volume | 3 |
| Issue number | SUPPL. 1 |
| Pages (from-to) | 853-856 |
| Number of pages | 4 |
| ISSN | 1960-6206 |
| DOIs | |
| Publication status | Published - 04.2010 |
| Externally published | Yes |
- Aluminum, Aluminum scrap, Chips, Extrusion, Recycling
- Engineering
Research areas
- Materials Science(all)