Experiments of eliminating the destructive effects of excessive Fe inclusions for Al secondary products

3rd International Conference on Advanced Materials Research and Applications

Sun, D.Q.^1 ; Dai, G.H.^2 ; Geng, F.^1,2 ; Yang, K.^1

School of Chemical and Materials Engineering, Changshu Institute of Technology, 215500, China^1

Jiangsu Key Laboratory of Recycling and Reuse Technology for Mechanical and Electronic Products, 215500, China^2

关键词: Al-alloy;    Destructive effects;    Fe content;    Fluxing agents;    Mass ratio;    Powder injection;    Process parameters;    Secondary product;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/170/1/012032/pdf
DOI  :  10.1088/1757-899X/170/1/012032

来源: IOP

【 摘 要 】

Excessive Fe content in Al alloys caused the serious decline of mechanical properties, such as the ductility and impact toughness. Carried out the experiments of eliminating the destructive effects of excessive Fe content by flux-adding technology, which including removing a part of Fe content from Al scrap melt and modifying the morphology of Fe rich precipitates. The experimental results showed that, the ratio of removing Fe element was above 20%, and the morphology of Fe rich precipitates changed from Lamellar to bulk or lath precipitations under the process parameters: the fluxing-agents composed of borax, and MnCl2(mixed by mass ratio of 1:1), and the adding amount of fluxing-agents was about 1.5%; thrown the fluxing-agents into the Al scrap melt by powder injection process and kept for 30 min.