(上海交通大學 材料科學與工程學院 輕合金精密成型國家工程研究中心，上海 200240)
摘 要: 在工業(yè)輕量化日趨迫切的環(huán)境下，鎂鋰合金作為最輕的金屬結構材料，不僅織構傾向弱，低溫機械加工性好，還具有可回收利用的綠色特性，應用前景相當廣闊。但是與大熔煉量高品質鎂鋰合金制備相關的熔體保護工藝復雜和熔體凈化技術缺乏是制約其獲得大規(guī)模應用的關鍵因素之一。本文介紹了國內外鎂鋰合金熔體保護和凈化的研究進展，討論了氣體保護、熔劑保護和凈化的作用機制，并展望了鎂鋰合金熔體保護和凈化的未來技術發(fā)展方向。
關鍵字: 鎂鋰合金；熔體保護；熔劑；夾雜；凈化
（National Engineering Research Center of Light Alloy Net Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China）
Abstract:Under the increasingly urgent situation of industrial lightweighting, magnesium-lithium alloys, as the lightest metal structural materials, not only have a weak texture tendency, good low-temperature mechanical processability, but also have the green characteristics of recyclability, and have broad application prospects. However, the complicated melt protection process and the lack of melt purification technology related to the preparation of large-volume high-quality Mg-Li alloy are one of the key factors restricting its large-scale application. This paper introduces the research progress of Mg-Li alloys melt protection and purification at home and abroad, discusses the mechanisms of gas protection, flux protection and purification. We prospect the future technological development direction of Mg-Li alloys melt protection and purification as well.
Key words: Mg-Li alloy; melt protection; flux; impurities; purification
