基于三维静电场的TC4合金叶片预制坯设计  

Preform Design of TC4 Alloy Blade Based on 3D Electrostatic Fields

作　　者：蔡军[1] 李付国[1] 张鹏[1] 

机构地区：[1]西北工业大学材料学院,西安710072

出　　处：《航空材料学报》2009年第5期66-71,共6页Journal of Aeronautical Materials

摘　　要：以一种TC4合金叶片为例提出了一种新的基于三维静电场的预成形设计方法。利用塑性变形过程中坯料流动规律类似于静电场等势线这一特征,通过三维静电场模拟选取适当的等势场作为预制坯的基本形状。并利用数值模拟软件对TC4合金叶片的等温成形过程进行模拟,与采用传统经验设计的预制坯成形过程进行了对比。结果表明,采用三维静电场设计的预制坯成形效果良好,该方法特别适合复杂表面锻件体积成形工艺的预制坯设计。Based on the 3-D electrostatic fields, a new method of preform design was brought forward by the example of TC4 alloy blade. According to the similarity between the blank flow law and the isopotential line of the electrostatic field, the appropriate shape of the preform was obtained though selecting suitable equipotential line by simulation of 3D electrostatic field. Compared with preform based on the conventional method, the isothermal forging of TC4 alloy blade was simulated. The simulation results showed better forming effect of TC4 alloy blade was achieved by using the preform based on 5-D electrostatic fields. This method is especially suitable for preform design of bulk forming process of forging with complex surface morphology.

关 键 词：三维静电场 TC4合金叶片 预制坯设计 数值模拟 

分 类 号：TG311[金属学及工艺—金属压力加工]