De Caro Daniele, Tedesco Michele Maria, Pujante Jaume, Bongiovanni Andrea, Sbrega Giovanni, Baricco Marcello, Rizzi Paola
Stellantis, Metals & Anticorrosion Department, Corso Settembrini 40, 10135 Turin, Italy.
Eurecat, Centre Tecnològic de Catalunya, Unit of Metallic and Ceramic Materials, Plaça de la Ciència, 2, 08243 Manresa, Spain.
Materials (Basel). 2023 Oct 20;16(20):6778. doi: 10.3390/ma16206778.
Sustainability is one of the biggest values of today and for the future of our society; a responsible usage of material in every sector is fundamental to achieving sustainability goals. Aluminum alloys are some of the most promising materials in terms of strength and weight, but their production implies the emission of a high amount of CO. For that reason, the study and development of aluminum alloys with increasing scrap content play a central role in future applications. In the current study, two sheet-aluminum 6181 alloys with different scrap content were analyzed and compared with a 6181 alloy coming from primary production. The alloys were compared in terms of chemical composition, microstructure, tensile properties, and forming behaviors. The results showed that the alloys coming from secondary productions contained a higher amount of manganese, iron, and copper. The metallurgical and mechanical behaviors were very similar to those of the primary produced alloy. Nevertheless, a drop in formability was shown in the aluminum alloys containing a high scrap amount when stressed in a biaxial condition. The study demonstrated the viability of 6181 alloy production using a high scrap amount, highlighting the main difference with the same alloy coming from primary route production.
可持续性是当今及我们社会未来的最大价值之一；每个行业对材料的负责任使用是实现可持续发展目标的基础。就强度和重量而言，铝合金是最有前景的材料之一，但其生产意味着大量二氧化碳的排放。因此，含废铝量不断增加的铝合金的研究与开发在未来应用中起着核心作用。在当前的研究中，分析了两种不同废铝含量的6181板材合金，并与原生生产的6181合金进行了比较。从化学成分、微观结构、拉伸性能和成型行为方面对这些合金进行了比较。结果表明，二次生产的合金含有较高含量的锰、铁和铜。其冶金和力学行为与原生生产的合金非常相似。然而，当在双轴条件下受力时，含高废铝量的铝合金的成型性有所下降。该研究证明了使用高废铝量生产6181合金的可行性，突出了与原生生产路线的同一合金的主要差异。
