Abstract
Components of the offshore industry have to withstand high mechanical loads under extreme conditions. Thus, noble metals have been used for manufacturing of pipes, with materials as corrosion resistant alloys (CRA). Nevertheless, fusion welding for CRA still lacks of reproducibility, looking for more effective processes. In this context, friction stir welding is suitable for CRA. Therefore, this study focuses on mechanical and corrosion properties of friction stir welds in UNS N06625 and UNS S32760. At first, the weld microstructure and its corresponding heat input were analysed. Besides, microhardness measurements were performed. Moreover, the pitting resistance was studied according ASTM G48A. The results showed that friction-stir-welded alloy 625 had greater pitting resistance than friction-stir-welded super duplex.
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