某航空发动机作动筒孔边裂纹失效分析  

Crack Failure Analysis for Actuating Cylinder in an Aero-Engine

作　　者：熊纯[1] 何卫锋[2] 马康民[2] 

机构地区：[1]长沙航空职业技术学院,湖南长沙410124 [2]空军工程大学工程学院,陕西西安710038

出　　处：《长沙航空职业技术学院学报》2010年第1期33-37,共5页Journal of Changsha Aeronautical Vocational and Technical College

摘　　要：某型航空发动机喷口收放作动筒是裂纹故障多发部位。对作动筒典型失效件进行了断口分析,发现裂纹故障是由于孔边部位表面容易发生应力腐蚀开裂。进一步对显微组织和断面能谱进行分析,发现作动筒材质合乎要求,腐蚀主要是由于使用环境因素造成的。研究结果对于该作动筒的故障分析及预防具有重要的意义。The actuating cylinders of an aero engine are often broken down. The fraetography of a representative actuating cylinders is observed and analyzed. Results show that the failure is due to stress corrosion. Then the microstructures and energy spectrometer are investigated, which demonstrates the material of actuating cylinder is up to the relevant parameters and the corrosion is mainly caused by the medium in working environment. These results are very significant for failure analysis and prevention of compressor blades.

关 键 词：作动筒 裂纹 断口金相 应力腐蚀 失效分析 

分 类 号：V263[航空宇航科学与技术—航空宇航制造工程]