Preparation of a novel Mg-Fe master alloy and its spheroidizing effect on graphite in ductile irons

Spheroidizing treatment is of crucial importance for producing ductile irons. A novel Mg-Fe master alloy has been achieved through the recycling procedure of Al-Si-Fe alloys in this paper. The alloy of Mg-50Fe-16Al-8Si with amounts of block-like Al2Fe3Si particles was synthesized by adding Al-14Si-2Fe alloy into Mg melt. It was found that the Mg-Fe master alloy exhibits attractive spheroidizing performance on a ductile iron Q10. This work confirms the significance for achieving Mg-Al and Mg-Fe alloys simultaneously through recycling Al-Si-Fe alloys.