Failure analysis of the oil transport spiral welded pipe

被引：12

作者：

Lin, Meng-Bin ^{[1
,2
]}

Gao, Kewei ^{[1
]}

Wang, Chaur-Jeng ^{[2
]}

Volinsky, Alex A. ^{[3
]}

机构：

[1] Univ Sci & Technol Beijing, Dept Mat Phys & Chem, Beijing 10083, Peoples R China

[2] Natl Taiwan Univ Sci & Technol, Dept Mech Engn, Taipei, Taiwan

[3] Univ S Florida, Dept Mech Engn, Tampa, FL 33620 USA

来源：

ENGINEERING FAILURE ANALYSIS | 2012年 / 25卷

基金：

美国国家科学基金会;

关键词：

Failure analysis; Failure mechanism; Inclusions; Welded pipe;

D O I：

10.1016/j.engfailanal.2012.05.008

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The spiral welded pipe for oil transport failed catastrophically fracturing along the spiral welding line. The failure was in the base metal close to the heat-affected zone. Passive inclusions in the rolled metal are responsible for the pipe failure. Microstructure examination and Charpy-V notch tests reveal that the crack follows the oxide inclusions and is associated with their distribution, since the base metal toughness is insufficient to retard cracking. Improvement of the steel purity is suggested to prevent future pipe failures. Improving the welding technique to reduce the residual stress acting on the base metal also decreases the risk of pipe failure. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：169 / 174

页数：6

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