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镀铬对8Cr4Mo4V 钢疲劳行为的影响
引用本文:耿长建,邢丕臣,牛春兴,滕佰秋,李晓欣.镀铬对8Cr4Mo4V 钢疲劳行为的影响[J].航空发动机,2017,43(5):64-68.
作者姓名:耿长建  邢丕臣  牛春兴  滕佰秋  李晓欣
作者单位:中国航发湖南动力机械研究所,湖南株洲412002
基金项目:航空动力基础研究项目资助
摘    要:为研究吞鸟对涡轴发动机的影响,进行了3次吞鸟试验。在试验中,由气体炮将鸟射入发动机进气道,采用高速摄影仪 记录鸟的运行轨迹和撞击部位及试验件形变过程。试验数据表明:在吞鸟过程中发动机各参数均大幅波动,持续时间约为3~4 s, 波动过后,功率恢复时间约为5~9 s,各参数达到最终状态时间约为90~95 s;试验后发动机性能有衰减现象,清洗后有所恢复。经 孔探和分解检查可知:鸟的残骸主要部分未进入发动机主流道,第1 级压气机叶片卷曲变形。

关 键 词:吞鸟试验  涡轴发动机  气体炮  高速摄影  性能  卷曲变形

Influence of Chroming on Fatigue Behavior of 8Cr4Mo4V Steel
Authors:GENG Chang-jian  XING Pi-chen  NIU Chun-xing  TENG Bai-qiu  LI Xiao-xin
Institution:AECC Shenyang Engine Research Institute, Shenyang 110015,China
Abstract:To study the influence of bird ingestion on turboshaft engine, 3 bird ingestion tests were carried out. During the bird ingestion test, the birds were shot into air inlet duck by air cannons. Meanwhile, the highspeed photography equipment recorded the running path, the strike position of birds and the engine deformation process. The test data shows that engine parameters fluctuated by a large margin, the fluctuation continues about 3~4 second during the bird ingestion. And power recovering steady state needs about 5~9 seconds, but engine parameters reaching ultimately state needs about 90~95 seconds. After the test, there is decay of engine performance. However, engine performance get some recovery by washing. Through boresoope inspection and disassembly inspection, there isn''t bird''s remains in main channel. A blade of the primary compressor crimps and deforma.
Keywords:bird ingestion test  turboshaft engine  air cannons  high-speed photography  performance  crimp deformation
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