Abstract
This paper analyses the root causes of the failure of a set of blades belonging to the high pressure compressor of an aircraft engine. All these blades were manufactured using a 718 nickel base alloy. The performed study consisted in a fractographic analysis by scanning electron microscopy and a microstructural study using both scanning and optical microscopy. Phases which were present in the fracture surfaces were identified by means of X-ray energy dispersive spectrometry. As a result of this labour the failure was attributed to the impact of sand and stones; that is the so-called foreign object damage mechanism.
Original language | English |
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Pages (from-to) | 666-674 |
Number of pages | 9 |
Journal | Engineering Failure Analysis |
Volume | 15 |
Issue number | 6 |
DOIs | |
Publication status | Published - Sept 2008 |
Keywords
- Compressor blades
- Foreign object damage
- Nickel base alloys