电流处理细化纯铝凝固组织的研究  

Study on Refining Solidified Structure of Pure Aluminium with Electric Current Treating

作　　者：崔衡[1] 苍大强[1] 宗燕兵[1] 李玲珍[1] 陈琳[1] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083

出　　处：《有色冶金设计与研究》2006年第4期6-8,共3页Nonferrous Metals Engineering & Research

基　　金：国家自然科学基金资助项目(30160186)

摘　　要：介绍了一种改善金属凝固组织的外场处理新方法—电流处理方法。研究了液态下施加直流电流和脉冲电流对工业纯铝凝固组织的影响。结果表明,该方法可以细化纯铝的凝固组织,使粗大的柱状晶变为细小的等轴晶;处理参数不同,对铝锭的宏观组织细化程度不同。Electric current modification treating method, a new physical tields process modlfying me solidification strucrure oi metals, was introduced. Effects of direct current （DC） and pulse current acting on liquid metal on the solidified structure of pure aluminium were studied. According to experimental results, the macrostructure of aluminium ingot was modified from large grains with columnar crystals to finer grains with equiaxed crystals using the method. The solidification structures could be refined variously under different DC parameters.

关 键 词：电流处理 纯铝 凝固组织 

分 类 号：TG111.4[金属学及工艺—物理冶金]