基于数学模型的立方晶系合金枝晶生长过程研究  

Study on Dendrite Growth Process of Cubic System Alloy Based on Mathematical Models

作　　者：左静贤[1] 

机构地区：[1]河北建材职业技术学院,河北秦皇岛006604

出　　处：《铸造技术》2014年第6期1243-1245,共3页Foundry Technology

基　　金：河北省社科基金项目资助(HB12YJ068)

摘　　要：建立了改进的MCA模型,并分别对NH4Cl-H2O透明合金材料的单个等轴晶、择优生长取向不同的多个等轴晶,以及择优生长取向不平行于x轴的柱状晶的生长过程进行了数值模拟。将模拟结果与实验结果进行对比,表明本文建立的MCA模型可以较准确地模拟具有不同择优生长取向的枝晶生长过程。An improved MCA model was established and the dendrite growth process of NH4Cl-H20 transparent alloy was simulated, including single equiaxed crystal, multi-equiaxed crystal with different preferential growth orientation, and the columnar dendrites whose preferential growth orientation is not parallel to the x-axis. The simulation results were compared with the experimental results. The results show that the MCA model can accurately simulate the dendrite growth process with different preferred growth orientation.

关 键 词：数学模型 立方晶系合金 数值模拟 

分 类 号：TG131[一般工业技术—材料科学与工程]