Causes of fatigue failure in an aero-engine component

被引：2
|
作者：
Salam, I
Tauqir, A
Khan, AQ
机构：
[1] Metallurgy Division, Dr. A. Q. Khan Research Laboratories, Kahuta, Rawalpindi
来源：
ENGINEERING FAILURE ANALYSIS | 1997年 / 4卷 / 01期
关键词：
D O I：
10.1016/S1350-6307(96)00028-3
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The retaining ring of an aero-engine failed in fatigue mode. Metallurgical investigations revealed that there was a high density of inclusions in the material which are not deformable. During deformation, they disintegrated and formed voids which could act as sharp notches during fatigue loading. Axial surface cracks were visible on the surface of the ring. It is proposed, as found in previous failure analysis studies, that surface cracks trap lubricants used during the drawing process of the wires, and carburize the region during subsequent annealing. These regions can also be potential sites of fatigue crack initiation. (C) 1997 Elsevier Science Ltd.
引用
收藏
页码：39 / 47
页数：9
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