Slurry erosion surface damage under normal impact for pipeline steels

被引：45

作者：

Alam, Tahrim ^{[1
]}

Farhat, Zoheir N. ^{[1
]}

机构：

[1] Dalhousie Univ, Mat Engn Program, Halifax, NS B3J 2X4, Canada

来源：

ENGINEERING FAILURE ANALYSIS | 2018年 / 90卷

关键词：

Slurry erosion of pipeline steel; Erosion mechanism; Effect of slurry concentration; Effect of flow characteristics etc; SOLID PARTICLE EROSION; ANGLE; WEAR; VELOCITY; BEHAVIOR; HARDNESS; MODEL; FLOW; IMPROVEMENT; VALIDATION;

D O I：

10.1016/j.engfailanal.2018.03.019

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Slurry erosion is responsible for major failures in oil and gas transmission pipelines. In this study, slurry erosion behavior of AISI 1018, AISI 1080, API X80, API X100 and API X120 is investigated to determine the effect of slurry concentration on erosion rate and erosion mechanisms. The slurry concentrations employed were 0, 1, 2, 3, 4 and 5 wt.% while slurry velocity (12m s(-1)) and angle of incidence (90 degrees) were kept constant. It is found that erosion rate increases with increasing slurry concentration. SEM observations and EDS analysis were performed in order to determine the dominant erosion mechanisms. Heavy plastic deformation, brittle fracture of work hardened layer and microcutting are identified as dominant erosion mechanisms. API X120 and AISI 1080 steels showed better erosion resistance compared to the other steels investigated in this study. The features of the overall damaged region are related to the flow characteristics of the slurry.

引用

页码：116 / 128

页数：13

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