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XIONG Yong, LE Shu-jun, CHEN Chang-da, ZHENG Zhi-mei. Analysis on Cracks in 1Cr18Ni9Ti Tubing[J]. PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING, 2013, 49(3): 182-184.
Citation: XIONG Yong, LE Shu-jun, CHEN Chang-da, ZHENG Zhi-mei. Analysis on Cracks in 1Cr18Ni9Ti Tubing[J]. PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING, 2013, 49(3): 182-184.
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Analysis on Cracks in 1Cr18Ni9Ti Tubing

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  • Received Date: March 29, 2012
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  • The oil leakage accidents occurred three times in one aviation engine in use. Based on crack macroscopic observation, metallographic examination, chemical composition analysis, stress measurement and fracture surface electron microscope observation for one of the oil tubes, the crack mechanism and cause were determined. The results showed that the cracks in oil tube were fatigue crack under large initial stress, the fatigue crack originated on the R outer surface of pipeline transfer mouth because of large assembly stress. The crack initiation also had certain effect and promoting by the impact of high pressure fuel and the vibration of tubing role and local unbonding of solder in the position of pipeline transfer mouth.
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    • References (5)
  • [1]
    《中国航空材料手册》编辑委员会. 中国航空材料手册(第一卷)[M]. 北京:中国标准出版社,2002:817-819.
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    胡晓辉. 1Cr18Ni9不锈钢夹紧带断裂原因分析[J]. 失效分析与预防,2008,3(3):55-58.
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    李权,傅国如,徐志刚,等. 航空发动机不锈钢导管失效分析[J]. 材料工程,2003(z1):137-138.
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    傅国如. 发动机燃油供油导管断裂失效分析[J]. 失效分析与预防,2007,2(1):29-33.
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    刘昌魁,刘华. TA15钛合金焊接接头性能与断裂行为研究[J]. 失效分析与预防,2006,1(2):45-48.
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