Failure analysis of an unused delivery tube of stainless steel 316L

Yang Li; Yong Jiang; Jianming Gong

doi:10.11973/fsyfh-201810014

Failure analysis of an unused delivery tube of stainless steel 316L

Yang Li, Yong Jiang, Jianming Gong

School of Mechanical and Power Engineering

Nanjing Tech University

Research output: Contribution to journal › Article › peer-review

Abstract

316L stainless steel has good resistance to pitting corrosion, but pitting failure can also occur under certain conditions. The reasons for the leakage of an unused 316L heating furnace tube were analyzed by macro analysis’ chemical composition analysis’ electron scanning microscopy (SEM) ’ energy dispersive spectroscopy (EDS) and microstructure analysis. The results show that many Cl^- and Br^- ions were contained in the water used in hydraulic pressure test for the tube. After hydraulic pressure test, the tube was sealed before the water had been drained completely, resulting in the occurrence of pitting corrosion in storage period.

Original language	English
Article number	1005-748X(2018)10-0810-04
Pages (from-to)	810-813
Number of pages	4
Journal	Corrosion and Protection
Volume	39
Issue number	10
DOIs	https://doi.org/10.11973/fsyfh-201810014
State	Published - 1 Oct 2018

Keywords

316L stainless steel
Hydraulic pressure test
Pitting corrosion
Tube

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10.11973/fsyfh-201810014

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abstract = "316L stainless steel has good resistance to pitting corrosion, but pitting failure can also occur under certain conditions. The reasons for the leakage of an unused 316L heating furnace tube were analyzed by macro analysis{\textquoteright} chemical composition analysis{\textquoteright} electron scanning microscopy (SEM) {\textquoteright} energy dispersive spectroscopy (EDS) and microstructure analysis. The results show that many Cl- and Br- ions were contained in the water used in hydraulic pressure test for the tube. After hydraulic pressure test, the tube was sealed before the water had been drained completely, resulting in the occurrence of pitting corrosion in storage period.",

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AU - Gong, Jianming

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N2 - 316L stainless steel has good resistance to pitting corrosion, but pitting failure can also occur under certain conditions. The reasons for the leakage of an unused 316L heating furnace tube were analyzed by macro analysis’ chemical composition analysis’ electron scanning microscopy (SEM) ’ energy dispersive spectroscopy (EDS) and microstructure analysis. The results show that many Cl- and Br- ions were contained in the water used in hydraulic pressure test for the tube. After hydraulic pressure test, the tube was sealed before the water had been drained completely, resulting in the occurrence of pitting corrosion in storage period.

AB - 316L stainless steel has good resistance to pitting corrosion, but pitting failure can also occur under certain conditions. The reasons for the leakage of an unused 316L heating furnace tube were analyzed by macro analysis’ chemical composition analysis’ electron scanning microscopy (SEM) ’ energy dispersive spectroscopy (EDS) and microstructure analysis. The results show that many Cl- and Br- ions were contained in the water used in hydraulic pressure test for the tube. After hydraulic pressure test, the tube was sealed before the water had been drained completely, resulting in the occurrence of pitting corrosion in storage period.

KW - 316L stainless steel

KW - Hydraulic pressure test

KW - Pitting corrosion

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Failure analysis of an unused delivery tube of stainless steel 316L

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Keywords

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