锌铝合金凝固缺陷数值分析  

Numerical Analysis on Solidification Defects of Zinc-Aluminum Alloy

作　　者：张莹[1] 周志磊[1] 徐金华[1] 马强[1] 

机构地区：[1]南昌大学机电学院,江西南昌330031

出　　处：《热加工工艺》2012年第17期35-36,39,共3页Hot Working Technology

基　　金：国家自然科学基金资助项目(51066005)

摘　　要：为了很好地了解锌铝合金凝固过程产生的缺陷,建立了普通金属型铸造实验条件下的大直径(114mm)锌铝合金的几何及物理模型。利用有限元方法对凝固过程的缩松情况进行了模拟和分析。与实际铸造条件下铸锭的内部缩松情况进行了对比,数值模拟结果的准确性得到了验证,为提高凝固锌铝合金材料的铸造质量提供了一定的依据。To better understand the produced defects in solidification process for zinc-aluminum alloy, a physical model about the 114 mm diameter of the zinc-aluminum alloy under the common metal mold casting experimental conditions was established. The shrinkage porosity during the solidification process was analyzed and simulated by the finite element method. Contrasting the interior shinkage of ingot casting with the shinkage of actual casting test condition, the accuracy of numerical simulation result was proved. It provide an effective basis for improving the quality of the solidified zinc aluminum alloy casting.

关 键 词：锌铝合金 数值分析 凝固 缩松 

分 类 号：TG146[一般工业技术—材料科学与工程] TG244.3[金属学及工艺—金属材料]