脉冲磁致振荡作用下Ga-In-Sn液态合金中熔体流场的数值模拟  

Numerically Simulation on Melt Flow Field of Liquid Ga-In-Sn Alloy under Action of Pulsed Magneto-Oscillation

作　　者：靳平霞 徐智帅 徐燕祎 张云虎[1] 郑红星[1] 翟启杰[1] JIN Pingxia;XU Zhishuai;XU Yanyi;ZHANG Yunhu;ZHENG Hongxing;ZHAI Qijie(Center for Advanced Solidification Technology, Shanghai University, Shanghai 200044, China)

机构地区：[1]上海大学先进凝固技术中心,上海200044

出　　处：《上海金属》2020年第4期95-99,共5页Shanghai Metals

基　　金：上海市青年科技英才杨帆计划(No.17YF1405900)。

摘　　要：采用多物理场数值模拟软件Comsol,结合超声多普勒测速仪,对Ga-In-Sn液态金属模铸过程中熔体流速进行了数值模拟和试验测定。研究了脉冲磁致振荡线圈与熔体高度方向的相对位置变化对熔体流场的影响。结果表明:在脉冲磁致振荡外场作用下,给定脉冲电流及频率条件,将脉冲磁致振荡线圈置于模铸熔体水平中线位置时,其内部流场环境对模铸凝固组织的细化效果最佳。Melt flow velocity was simulated and measured by applying multi-physical field simulation software Comsol and ultrasonic Doppler velocimeter for the liquid Ga-In-Sn alloy during the process of die casting.The influence of the relative position change of the pulse magnetic oscillation coil and the melt in height direction on the melt flow field was studied.The results showed that under the action of pulse magnetic oscillation field and given pulse current and frequency conditions,when the coil was placed at the horizontal center line of the die casting melt,the internal flow field had the best refining effect on the solidification structure of the die casting.

关 键 词：脉冲磁致振荡 液态Ga-In-Sn合金 流场 数值模拟 

分 类 号：TG1[金属学及工艺—金属学]