The Effect of Impingement Velocity and Angle Variation on the Erosion Corrosion Performance of API 5L-X65 Carbon Steel in a Flow Loop

The Effect of Impingement Velocity and Angle Variation on the Erosion Corrosion Performance of API 5L-X65 Carbon Steel in a Flow Loop

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Erosion corrosion performance of API 5L-X65 carbon steel was investigated at three Candles different impingement velocities (3, 6 & 12 m/s), five different angles (15, 30, 45, 60, & 90°), and with/without solid particles (average particle size of 314 µm).The experiments were conducted in 0.2 M NaCl solution at room temperature for a duration of 24 h and the results showed that the maximum erosion corrosion rate was observed at 45° irrespective of the velocity.

The highest erosion corrosion rate at 45° was due to the balance between the shear and normal impact stress at this angle.Ploughing, deep craters, and micro-forging/plastic deformation were found to be the main erosion corrosion mechanisms.The maximum wear scar depth measured using optical Industrial:Retail profilometery was found to be 51 µm (average) at an impingement angle of 45°.