(1.西北工业大学凝固技术国家重点实验室，西安710072；
2.航空工业总公司科技局，北京100712)
摘 要: 探讨了电磁自约束定向生长条件下，温度分布对抽拉速度的响应，以及电磁搅拌引起的对流对温度分布以及固/液界面上温度梯度GL的作用。检测了液柱头高度，固/液界面位置对温度场以及温度梯度GL的影响。结果提供了几种增高温度梯度GL的有效途径。
关键字: 电磁约束 液柱头 温度场 温度梯度
FIELD IN SELF-CONSTRAINED DIRECTIONAL GROWTH
BY ELECTROMAGNETIC FORCE
（State Key Laboratory of Solidification Processing,
Northwestern Polytechnical University, Xi’an 710072）
Abstract:Under the condition of electromagnetic self-constrained directional solidification, the response of temperature distribution to drawing rate and the effects of convection caused by electromagnetic stirring on temperature distribution and temperature gradientGLon the solid/liquid interface were explored. Influences of meniscus height and solid/liquid interface position on temperature distribution andGLwere detected. Finally several effective ways to increaseGLwere
obtained from the experimental results.
Key words: electromagnetic constrain meniscus temperature field temperature gradient
