Ajmal, T.S.Singh, R.K.Arya, S.B.Kumar D, S.2026-02-032025Materials and Corrosion, 2025, 76, 1, pp. 175-1879475117https://doi.org/10.1002/maco.202414456https://idr.nitk.ac.in/handle/123456789/20539Hydrodynamic flow conditions play a critical role in piping failure due to sharp variations of the Reynolds number in process and petrochemical industries. The current study aims to enhance flow-accelerated corrosion (FAC) resistance using metallurgy of the surface by utilizing the laser surface melting (LSM) technique. The FAC behavior of API X70 steel in simulated Indian synthetic oilfield water was studied by utilizing a closed-loop corrosion apparatus to simulate the pipeline flow. Electrochemical corrosion experiments (AC and DC methods) were conducted at a constant fluid velocity of 3 m/s in untreated and LSM-treated samples (at 2.5 and 3.0 kW) placed at a 90° pipe elbow. Experimental results showed that LSM-treated samples displayed enhanced resistance to FAC, attributed to changes in surface metallurgy. Additionally, it was observed that the corrosion rate varied within the pipe elbow for the different samples at different locations. © 2024 Wiley-VCH GmbH.Aluminum corrosionCorrosion rateCorrosion resistanceCorrosive effectsElectrochemical corrosionOil well floodingPipelinesSteel corrosionElectrochemical impedance spectroscopyElectrochemical-impedance spectroscopiesExtrapolation methodsFlow-accelerated corrosionsLaser surface meltingOilfield watersPhases transformationSurface-modificationTafel extrapolation methodTafel extrapolationsPipeline corrosion