Abstract
The dry erosion behavior of API-X120 pipeline steel was investigated, under the erosive interaction of aluminum oxide particulates, in a range of speed (43–167 m·s−1) and impact angle (30°–90°). Erosion behavior is characterized by surface profile measurement, weight loss measurement, and surface morphology analysis by SEM/EDX. Optical profilometry revealed that the eroded area increased with elevating speed of particles while the penetration depth increased with the increases in impact angle as well as particle speed. Percent weight loss and normalized erosion rate indicated that the lower impact angles and higher speeds led to higher materials loss and erosion. SEM analyses on various combinations of impact angles and particle speeds demonstrated the predominant erosion mechanism under those specific conditions; attributed to the intensity of the resolved components of the momentum vector horizontal or normal to the target metal surface under those conditions.
Highlights
Pipeline systems have been used for transporting petroleum products [1,2,3].Plain carbon steels are commonly used for constructing long-distance pipelines due to its mechanical durability and low cost [4,5]
The erosion behaviour of API X120 steel has been investigated using aluminum oxide as erodent particle under simulated erosive environment inside the pipelines, with an objective to introduce a better understanding of erosion behavior of this cutting-edge pipeline steel. the effects of various combinations of particles speed and impact angle on the erosion behaviour of API X120 pipeline steel is presented
The weight loss and erosion rate increased with increasing particle speed for all the impact angles due to the high kinetic energy by the erodent particles
Summary
Plain carbon steels are commonly used for constructing long-distance pipelines due to its mechanical durability and low cost [4,5] These pipelines are often subjected to severe erosion due to the presence of a broad range of erodent particles, often found in the petroleum products [6,7]. The erosion behaviours of pipeline steels under different environmental conditions are available in the literatures [4,5,9] Some of these studies have focused on understanding the erosion mechanisms of pipeline materials at different particles speeds and impact angles [10,11,12,13,14].
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