铀铌合金铸件铸造过程中夹杂数值模拟研究  

Numerical Simulation on Inclusion of Uranium-Niobium Alloy Casting in Solidification Process

作　　者：谢志毅[1] 罗超[2] 王震宏[2] 赵晓平[1] 

机构地区：[1]中国工程物理研究院计算机应用研究所,四川绵阳621900 [2]中国工程物理研究院材料研究所,四川绵阳621900

出　　处：《热加工工艺》2013年第15期49-51,共3页Hot Working Technology

摘　　要：介绍了铸造过程中夹杂数值模拟的技术进展。基于氧化膜卷入机理,采用ProCAST软件中的粒子跟踪方法,对铀铌合金充型过程中夹杂物的运动轨迹进行了模拟。结果表明,当夹杂物的密度不大于15×103kg/m3时,夹杂物最终位于铸件的顶部;当夹杂物的密度在(16～17)×103kg/m3时,夹杂物在铸件的中部停留较长时间;当夹杂物的密度大于18×103kg/m3时,夹杂物在铸件的底部。The technological development of numerical simulation on inclusions during the casting was introduced. Based on the mechanism of entrapment for oxide film, adopting particle trace method in ProCAST software, the simulation on inclusion formation during uranium-niobium alloy casting was performed. The results show that, the inclusions final locations are at the top of castings when the density of inclusions is less than 15×10^3 kg/m^3; the inclusions stay in the middle of castings for long time when the density of inclusions is between 16x10^3 kg/m^3 and 17×10^3 kg/m^3; the inclusions are at the bottom of castings when the density of inclusions is more than 18×10^3 kg/m^3.

关 键 词：铀铌合金 铸造 夹杂 数值模拟 

分 类 号：TG245[金属学及工艺—铸造]