磁场对偏晶合金定向凝固组织的影响  

Effect of Transverse Magnetic Field during Directional Solidification of Monotectic Al 6.5 Bi Alloy

作　　者：杨森[1] 梁文心[1] 贾均[2] 

机构地区：[1]内蒙古工业大学,内蒙古自治区呼和浩特010062 [2]哈尔滨工业大学,黑龙江哈尔滨150001

出　　处：《铸造技术》1999年第5期44-46,共3页Foundry Technology

基　　金：国家自然科学基金

摘　　要：横向均匀静态磁场可以有效地抑制定向凝固过程中熔体中的对流；磁场的作用使偏晶系 Ａｌ６ ．５ Ｂｉ 合金纤维组织间距和纤维直径减小，而且组织分布更加均匀。Transverse static homogeneous magnetic field can effectively reduced or eliminate gravity driven and thermal convection during directional solidification of Al Bi monotectic alloy.Morphological,thermal and magnetic analyses were carried out on sample grown with and without an applied magnetic field.Results indicated that Bi mean rod diameters and inter rod spacing is reduced in a transverse magnetic field,and the microstructure becames more homogeneous.

关 键 词：偏晶合金 横向磁场 对流 定向凝固 组织 

分 类 号：TG27[金属学及工艺—铸造]