7075铝合金CREM法半连铸坯中溶质元素的宏观分布  

MACRO-DISTRIBUTION OF SOLUTE ELEMENTS IN 7075 ALUMINUM ALLOY INGOTS PRODUCED BY CREM PROCESS

作　　者：张勤 崔建忠[1] 

机构地区：[1]东北大学材料电磁过程教育部重点实验室,沈阳110004

出　　处：《金属学报》2003年第12期1264-1268,共5页Acta Metallurgica Sinica

基　　金：国家重点基础研究发展规划资助项目G199906490501

摘　　要：实验研究了CREM法(casting-refining-electromagnetic)中低频交变电磁场对半连铸7075铝合金凝固前沿形态、微观结构、非平衡凝固液固相线位置、结晶区间间隔的影响规律.据此对CREM法抑制7075铝合金半连铸坯中溶质元素宏观偏析的机理进行了分析和说明.The effects of electromagnetic field with low frequency in CREM (casting-refining-electromagnetic) method on solidifying front shape, non-dendritic structure, liquidus and solidus temperature of non-equilibrium freezing, solidification interval of 7075 aluminum alloy have been experimentally investigated. The mechanism of CREM process restraining macro-segregation of solute elements in 7075 aluminum alloy ingot was analysed.

关 键 词：铝合金 低频电磁铸造 半连铸 宏观偏析 

分 类 号：TG249.7[金属学及工艺—铸造] TG111.4