摘要
TC11钛合金压气机盘在实际生产中存在各种缺陷,降低了压气机盘的使用性能。将基于试验数据建立的TC11钛合金高温塑性变形时的延性损伤演化模型以及本构模型与有限元相结合,对某TC11钛合金压气机盘等温闭模锻造过程中的温度、等效应变和损伤变量的分布进行了数值分析,同时预测了塑性失稳区的位置。为优化其成形工艺提供了一种有效的方法。
There are some defects in the actual forging of TC11 alloy compressor disks, which decreases the performance of the compressor disks. In this paper, a ductile damage evolution model and a constitutive model for TC11 alloy during high temperature deformation developed based on the data from experiments were coupled with a FE simulator. Furthermore, the distributions of temperature, equivalent strain and damage value of TC11 alloy compressor disk during closed die forging were simulated and analyzed, and the plastic instability areas were predicted. It has provided an effective method to optimize the forging process of TC11 alloy compressor disks.
出处
《精密成形工程》
2009年第1期62-65,共4页
Journal of Netshape Forming Engineering
关键词
钛合金
压气机盘
损伤模型
缺陷
数值分析
titanium alloy
compressor disk
damage model
defect
numerical analysis
