| 李百洋，刘小刚，郭海丁.FOD 对TC4 合金扩散焊板材HCF 性能影响[J].航空发动机,2018,44(5): |
| FOD 对TC4 合金扩散焊板材HCF 性能影响 |
| Effect of Foreign Object Damage (FOD0on the High Cycle Fatigue(HCF)Performance of TC4 AlloyDiffusion Bonding Plate |
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| DOI： |
| 中文关键词: TC4 合金 扩散焊 外物损伤 高循环疲劳 宽弦空心风扇叶片 航空发动机 |
| 英文关键词:combustion characteristics main combustion chamber coal-based synthetic oil combustion test RP3 aviation kerosene aeroengine |
| 基金项目:航空科学基金（2015ZB52023）、中央高校基本科研业务费（NS2016022）资助 |
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| 中文摘要: |
| 针对外物损伤（FOD）对航空发动机宽弦空心风扇叶片高循环疲劳（HCF）性能的影响，以TC4 合金3 层扩散焊板件模拟宽
弦空心风扇叶片典型冲击部位，采用空气炮法对TC4 合金3 层扩散焊板进行FOD 模拟试验，对冲击角度为25°、40°和80°时的
损伤状况进行了宏微观测量；采用逐级加载法对FOD 后的扩散焊焊板进行HCF 强度试验，获得各条件下扩散焊板件的条件疲劳极
限。结果表明：在各冲击条件下，冲击角度为25°时对材料造成的损伤最严重，HCF 强度降低幅度最大；FOD 不仅会造成材料表面损
伤，还会对内部焊缝层造成损伤。在上述因素共同作用下，扩散焊板件FOD 后HCF 强度显著降低，相应的疲劳缺口系数明显增大。 |
| 英文摘要: |
| In order to examine the combustion characteristics of coal-based synthetic oil，the combustion characteristics fueled with
RP3 aviation kerosene and coal-based synthetic oil using same full annular combustion chamber test article in the main combustion
chamber of aeroengine test-bed were compared. The test results show that the wall temperature distribution of the interval flame tube fueled
with RP3 aviation kerosene and coal-based synthetic oil have no significant difference；The average outlet temperature and the combustion
efficiency of combustion chamber fueled with RP3 aviation kerosene and coal-based synthetic oilhave no significant differencein the same
test condition；The heat point of temperature distribution and the hot zones distributionat the combustion chamber outlet are both same，the
OTDF has little difference. The combustion chamber fueled with RP3 aviation kerosene and coal-based synthetic oil can start normally in
the same starting condition. |
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