Abstract
Abstract The current work presents a failure analysis study conducted on a fractured mechanical fastener made of Cu 12Mn alloy. The fastener was obtained from a flange of a large-diameter steel tube operating in a sea submersible platform. Macrofractography and Microfractography, Standard Optical Metallography, Scanning Electron Microscopy (SEM), X-ray Fluorescence (XRF) and Energy-Dispersive X-ray Spectroscopy techniques as well as Numerical Modeling were employed to assist the investigation. Fracture was eventually attributed to the synergistic action of fatigue and selective leaching (corrosion-assisted fatigue).
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