锻压技术

TC11钛合金粉末涡轮盘热等静压成形数值模拟研究

英文标题：Research on numerical simulation of hot isostatic pressing for turbine disk shaped by TC11 titanium alloy powder

作者：喻思郎利辉姚松王刚布国亮续秋玉

关键词：钛合金粉末热等静压数值模拟

分类号：TG394

出版年,卷(期):页码：2015,40(3):115-121

摘要：

为了成形复杂结构的涡轮盘零件，采用粉末热等静压工艺（HIP），设计了粉末净成形和粉-固扩散连接成形两种方案，使用 MSC.MARC软件，在Shima模型中嵌入TC11钛合金材料参数进行数值模拟研究。模拟结果显示：粉末净成形的模具变形是粉-固扩散连接成形的2倍左右；粉末净成形的粉末体在热等静压后，关键部位出现明显的密度梯度分布，相对密度较低，粉-固扩散连接成形的相对密度分布的均匀性优于粉末净成形，所以粉-固扩散连接成形方案优于粉末净成形方案。试验结果显示：热等静压工艺可以实现闭式涡轮盘的净成形。

The turbine disk with complex structure was shaped by the process of hot isostatic pressing (HIP). Two schemes of powder net shaping and powder-solid diffusion shaping were designed. The processes of the above schemes were simulated by software of MSC.MARC with the parameters of TC11 titanium alloy inserted in Shima model. The results show that the mould deformation of powder net shaping is about two times bigger than that of the powder-solid diffusion shaping. Furthermore, after HIP of the powder by powder net shaping, the density gradient distribution is obvious in the key parts, and the relative density is also lower, however, the relative density distribution of the powder-solid diffusion shaping is better than that of the powder net shaping. Therefore, the powder-solid diffusion shaping scheme is better than that of the powder net shaping scheme. The experimental results show that the hot isostatic pressing process can realize the net forming of the closed turbine disk.

基金项目：

国家科技重大专项（2009ZX04005-041）

喻思（1991-），男，硕士研究生

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