整体叶盘能够显著提高航空发动机性能.整体叶盘的质量是其在航空发动机中推广应用的重要因素.而组织均匀性是影响整体叶盘内在质量的关键因素之一.本文应用锻件内热力参数均匀性建立了基于Taguchi方法的损失函数,探索整体叶盘组织均匀性数值评价方法.应用所建立的损失函数以及TC11合金整体叶盘的锻造过程有限元数值模拟结果,对TC11合金整体叶盘组织均匀性进行了数值评价,并进行了实验验证.
The word "blisk"means that all the blades ale integrated with a disk.The application of the blisk is a key technology for improving performance of aero-engines.High quality of the blisk conduces to expand its application.Because of a strong influence of microstructure homogeneity on the quality of blisk,the author gives attention to it.In this paper,a loss function(LF)referring to the concept of Taguchi method was proposed.In the proposed LF,the distribution homogeneity of thermomechanical parameters was employed to evaluate the micmstructure homogeneity of TC11 blisk forging.Then,the forzing process of the TC11 alloy blisk was analyzed using FEM technique.Based on the FEM simulation results,the microstructure homogeneity of TC11 blisk forging was evaluated.Experiment was performed to verify the proposed method.
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