Corrosion Fatigue Failure Analysis of a Supporting Pipe Weld in Deaerization Plant

被引：0
作者：
Chu Q. [1 ]
Zhang M. [1 ]
机构：
[1] College of Materials Science and Engineering, Xi’an University of Technology, Xi’an
来源：
Journal of Failure Analysis and Prevention | 2015年 / 15卷 / 05期
关键词：
Corrosion fatigue; Failure analysis; Weld;
D O I：
10.1007/s11668-015-0012-y
中图分类号：
学科分类号：
摘要：
The aim of this work is to reveal the failure mechanism of a supporting pipe weld after 20 years of service in a deaerization plant. The characterization methods included inductively coupled plasma, optical microscopy, scanning electron microscope, X-ray energy dispersive spectrometer, mechanical tests, and finite element analysis (FEA). The results showed that the supporting pipe weld failed by corrosion fatigue cracking. Cracks initiated from the surface pits which were due to corrosion. FEA analysis revealed that stress concentration occurred in the failed weld. This paper brings out the details of the investigation and suggests remedial measures to improve performance of such pipe welds in deaerization plants. © 2015, ASM International.
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收藏
页码：744 / 749
页数：5
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