半固态锌合金凝固过程数值模拟  

Numerical simulation of semi-solid zinc alloy in solidification process

作　　者：张莹[1] 倪泽联[1] 韩婧潇[1] 

机构地区：[1]南昌大学机电工程学院,江西南昌330031

出　　处：《兵器材料科学与工程》2013年第1期21-24,共4页Ordnance Material Science and Engineering

基　　金：国家自然科学基金项目(51066005)

摘　　要：以ZA9半固态锌合金为研究对象,研究其凝固过程温度变化及影响因素。应用Fluent软件建立锌铝合金自然对流下的凝固数学模型,获得在牛顿流体和非牛顿流体假设下自然对流液相体积分数的分布图。利用自行研制的半固态浆料凝固过程温度测试试验台,对制取的锌铝合金半固态浆料温度进行控制和记录,并对两种模型的凝固界面及试验获得的凝固过程温度场数据进行对比,验证了模拟结果的可靠性。The ZA9 semi-solid zinc alloy was regarded as the research object, and its temperature change and the influence factors of solidification process were studied. The Fluent software was applied to establish a zinc aluminum alloy solidification mathematical model under natural convection, and to simulate liquid phase volume fraction distribution map in the natural convection under the assumption of Newton fluid and non Newton fluid respectively. Using the self-developed semi-solid slurry solidification temperature test bench, the semi-solid slurry temperatures of zinc aluminum alloy were controlled and recorded, and solidification interface of two different kinds of model was compared. The temperature field data in the solidification process was compared, which verified the reliability of the simulation results.

关 键 词：半固态合金 凝固 液相体积 牛顿流体 

分 类 号：TG146.22[一般工业技术—材料科学与工程] TG156.1[金属学及工艺—金属材料]