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Conclusion Through metallurgical SEM analysis, it was found that 42% of failures occurred due to corrosion plus erosion-corrosion, 16.5% were due to inclusions and stress gaps that could be correlated oto fatigue, 16.5% had traces of production impurities, and 25% showed fatigue via ductile-type failures. The results/reasons correlation can be summarized as follows: • In the investigation of a total...
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