(1.西北工業(yè)大學(xué)凝固技術(shù)國家重點(diǎn)實(shí)驗(yàn)室，西安710072；
2.航空工業(yè)總公司科技局，北京100712)
摘 要: 探討了電磁自約束定向生長條件下，溫度分布對抽拉速度的響應(yīng)，以及電磁攪拌引起的對流對溫度分布以及固/液界面上溫度梯度GL的作用。檢測了液柱頭高度，固/液界面位置對溫度場以及溫度梯度GL的影響。結(jié)果提供了幾種增高溫度梯度GL的有效途徑。
關(guān)鍵字: 電磁約束 液柱頭 溫度場 溫度梯度
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
