电磁搅拌作用对铝合金显微组织的影响  

INFLUENCE OF EMS ON ALUMINUM ALLOY MICROSTRUCTURE

作　　者：朱明原[1] 史文[1] 杨森龙[1] 任忠鸣[1] 邵光杰[1] 许珞萍[1] 

机构地区：[1]上海大学材料科学与工程学院,上海200072

出　　处：《中国有色金属学报》1999年第A01期29-34,共6页The Chinese Journal of Nonferrous Metals

摘　　要：研究了电磁搅拌对ＺＬ１０１Ａ 铝合金显微组织的影响， 阐明了不同搅拌工艺条件下ＺＬ１０１Ａ铝合金的显微组织的变化规律。结果表明： 在磁场强度大于０ ．０６５ Ｔ 的ＥＭＳ作用下，ＺＬ１０１Ａ 合金能够得到非树枝晶组织； 未经细化处理， 晶粒尺寸在１００ ～３００ μｍ 范围内； 随着ＥＭＳ 作用的增强， 晶粒向完全椭球形发展； 本实验条件下ＥＭＳ 没有细化共晶Ｓｉ 的作用， 也没有改变共晶Ｓｉ 的析出形态；The influence of electromagnetic stirring process on the ZL101A aluminum alloy microstructure was studied. The changing regularity of ZL101A alloy microstructure was revealed under different electromagnetic stirring conditions. It showed that when the magnetic field intensity is greater than 0.065 T, the nondendritic and spheroidal microstructure can be obtained in ZL101A alloy; without refinement treatment, the grain size ranges from 100 to 300 μm; as the EMS effect increases, the nondendritic structure evolves towards more spheroid; under the experiment conditions, EMS has no refinement effect on eutectic Si, and can not change its separation form. The results also showed that the EMS effect, solidification rate and their matching are the key to obtaining the ideal nondendritic structure.

关 键 词：电磁搅拌 铝合金 显微组织 

分 类 号：TG146.21[一般工业技术—材料科学与工程]