In this study, the fracture of a compressor rotor manufactured from grey cast iron is investigated. In order to study
the causes of the fracture, specimens prepared from the damaged rotor were subjected to experiments such as hardness
and Charpy impact tests. The effect of microstructure on the fracture was also considered. Results showed that the
rotor was manufactured from a cast iron containing carbon figures higher than values stated in standards and therefore
it has a low inipact energy. Geometrical analysis of the compressor rotor revealed that early failure of the structure
started from a sharp corner radius by which stress concentrations are created in the rotor.
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