Evolution Behavior of γ-Al3.5FeSi in Mg Melt and a Separation Method of Fe from Al–Si–Fe Alloys
来源期刊:Acta Metallurgica Sinica2018年第1期
论文作者:Tong Gao Zeng-Qiang Li Yao-Xian Zhang Xiang-Fa Liu
文章页码:48 - 54
摘 要:The recycling of high Fe-content Al–Si alloys is a green industry. Eliminating the harmful effect of Fe,achieving the separation of Al and Fe is one of the key problems. Different from traditional methods for iron removal, a novel method using magnesium melt to separate Al and Fe is proposed. By introducing Al–14 Si–5 Fe alloy into Mg melt, it was found that the γ-Al3.5FeSi phase evolves to Al3SiFe3.5 and Al5Fe2 through the melting and solidification process.Compared with the primary Al-rich γ-Al3.5FeSi phase, the formation of Fe-rich Al3Si Fe3.5 is quite beneficial for the separation of Al and Fe. Mg–Si–Al and Mg–Si–Fe alloys can be obtained at the top and bottom of the cooled ingot,respectively. The results in this study provide meaningful suggestions for recycling scrap Al–Si–Fe materials.
Tong Gao,Zeng-Qiang Li,Yao-Xian Zhang,Xiang-Fa Liu
Key Laboratory for Liquid–Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University
摘 要:The recycling of high Fe-content Al–Si alloys is a green industry. Eliminating the harmful effect of Fe,achieving the separation of Al and Fe is one of the key problems. Different from traditional methods for iron removal, a novel method using magnesium melt to separate Al and Fe is proposed. By introducing Al–14 Si–5 Fe alloy into Mg melt, it was found that the γ-Al3.5FeSi phase evolves to Al3SiFe3.5 and Al5Fe2 through the melting and solidification process.Compared with the primary Al-rich γ-Al3.5FeSi phase, the formation of Fe-rich Al3Si Fe3.5 is quite beneficial for the separation of Al and Fe. Mg–Si–Al and Mg–Si–Fe alloys can be obtained at the top and bottom of the cooled ingot,respectively. The results in this study provide meaningful suggestions for recycling scrap Al–Si–Fe materials.
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