| 某型发动机导管焊缝裂纹失效分析 |
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| 引用本文： | 王洪伟,陈荣,宋科,宋兰琪.某型发动机导管焊缝裂纹失效分析[J].金属热处理,2011(Z1). |
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| 作者姓名： | 王洪伟 陈荣 宋科 宋兰琪 |
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| 作者单位： | 北京航空工程技术研究中心; |
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| 摘 要： | 通过对裂纹断口进行的宏、微观观察,成分检查和综合分析,结果显示,发动机导管焊缝的裂纹性质为疲劳裂纹,疲劳起始于焊缝靠近外表面处的疏松缺陷。钎焊部位存在疏松缺陷是导致焊缝产生裂纹的根本原因。
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| 关 键 词： | 航空发动机 导管 疲劳断裂 焊接裂缝 |
Failure analysis of aero-engine turbine pipe |
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| WANG Hong-wei,CHEN Rong,SONG Ke,SONG Lan-qi.Failure analysis of aero-engine turbine pipe[J].Heat Treatment of Metals,2011(Z1). |
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| Authors: | WANG Hong-wei CHEN Rong SONG Ke SONG Lan-qi |
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| Affiliation: | WANG Hong-wei,CHEN Rong,SONG Ke,SONG Lan-qi(Beijing Aeronautical Engineering Technology Research Centre,Beijing,100076 China) |
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| Abstract: | Fracture analysis and microstructure examination were used to investigate the crack of a stainless steel pipe installed on an aero-engine turbine.The results showed that the crack mode of the pipe was fatigue failure,which starting at the defect of the pipe side surface;the major cause of the pipe crack was defect in the welding place. |
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| Keywords: | aero-engine turbine pipe stress concentration fatigue fracture welding crack |
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