Numerical simulation on directional solidification of Al-Ni-Co alloy based on FEM

作     者：Yang Zhili Chen Dengming Tian Shilong Liao Daohan Yang Yu 

作者机构：College of Metallurgy ＆ Material Engineering Chongqing University of Science and Technology Chongqing 401331 China 

出 版 物：《China Foundry》 (中国铸造（英文版）)

年 卷 期：2010年第7卷第1期

页      面：57-60页

核心收录：

学科分类：07[理学] 08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 070102[理学-计算数学] 0701[理学-数学] 

主　　题：Al-Ni-Co alloy finite element method columnar grain transient temperature field directionalsolidification temperature gradient solidification rate 

摘      要：The ratio, of the temperature gradient at the solidification front to the solidification rate of solid-liquid interface, plays a large part in columnar grain growth. The transient temperature fields of directional solidification of Al-Ni-Co alloy were studied by employing a finite element method. The temperature gradient at the solidification front and the solidification rate were analyzed for molten steels pouring at different temperatures. The results show that with different initial pouring temperatures, the individual ratio of the temperature gradient at solidification front to the solidification rate soars up in the initial stage of solidification, then varies within 2,000-6,000 ℃.***2, and finally goes down rapidly and even tend to be closed to each other when the solidification thickness reaches 5-6 cm. The simulation result is consistent with the practical production which can provide an available reference for process optimization of directional solidified Al-Ni-Co alloy.