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Influences of Hydrogen Effects and Corrosion Damages on Long-Term Service...
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Influences of Hydrogen Effects and Corrosion Damages on Long-Term Service Safety of Energy Pipelines

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Corrosion".

Deadline for manuscript submissions: closed (20 May 2023) | Viewed by 3298

Special Issue Editor

Prof. Dr. Wenyue Zheng

E-Mail Website
Guest Editor
Centre for Materials Service Performance, University of Science and Technology Beijing, Beijing 100083, China
Interests: corrosion and protection; high temperature alloy materials for nuclear power plants; steel for petroleum

Special Issue Information

Dear Colleagues,

Stress corrosion and hydrogen embrittlement are important causes for underground pipeline failure during long-term service, often resulting in catastrophic accidents and property damage. With the rapid development of hydrogen energy, much attention is put on pure hydrogen transportation and hydrogen–natural gas blend transportation using pipelines. Due to corrosion and hydrogen effects, and in the case of hydrogen pipelines, the coupled effects of these two mechanisms, the long-term safety of high-pressure pipelines deserves a refreshed focus. In this issue, the microscopic mechanisms of related degradation processes, safety assessment of affected structures, and control methods of aging of pipelines are addressed by researchers from different parts of the world.

This Special Issue focuses on the influences of hydrogen effects and corrosion damages on the long-term service safety of energy pipelines. Specifically, the following aspects are covered:

  • Stress corrosion cracking mechanism;
  • The use of cathodic protection technique;
  • Hydrogen effects on cracking and rupture;
  • Hydrogen compatibility and microstructural effects;
  • Hydrogen-induced cracking and delayed weld cracking;
  • Fatigue crack growth and roles of hydrogen;
  • Fitness for service assessment.

It is my pleasure to invite you to submit a manuscript to this Special Issue and contribute to our discussion of this special topic.

Prof. Dr. Wenyue Zheng
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • pipeline
  • corrosion
  • steel microstructure
  • welds
  • stress
  • stress corrosion
  • hydrogen
  • embrittlement
  • cracking
  • fracture
  • life assessment
  • pipeline safety
  • control

Published Papers (3 papers)

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Research

8 pages, 6462 KiB  
Article
On the Use of NaOH Solution to Simulate the Crevice Conditions of a Nuclear Steam Generator
by Do-Haeng Hur, Geun-Dong Song, Jeoh Han and Soon-Hyeok Jeon
Materials 2022, 15(23), 8471; https://doi.org/10.3390/ma15238471 - 28 Nov 2022
Viewed by 1387
Abstract
The corrosion behavior and integrity of steam generator (SG) tube materials have frequently been tested in solutions containing sodium hydroxide (NaOH), assuming that NaOH is a typical contaminant concentrated in the crevices of SGs in a pressurized water reactor. The purpose of this [...] Read more.
The corrosion behavior and integrity of steam generator (SG) tube materials have frequently been tested in solutions containing sodium hydroxide (NaOH), assuming that NaOH is a typical contaminant concentrated in the crevices of SGs in a pressurized water reactor. The purpose of this study was to investigate the adequacy of using concentrated NaOH solutions to simulate the crevice environments of SGs. The dissolution behavior of magnetite deposit flakes formed in an operating SG was tested in a 0.4 wt.% NaOH solution at 300 °C, and the thermodynamic stability of magnetite was investigated using the potential-pH diagram for an iron–water system. The magnetite deposits were rapidly dissolved in the test solution, which was supported by the fact that magnetite is thermodynamically unstable under the test condition to dissolve to dihypoferrite ions (HFeO2−). These results indicate that research data obtained from concentrated NaOH solutions are not appropriate to apply to the crevice environments of SGs. Full article
(This article belongs to the Special Issue Influences of Hydrogen Effects and Corrosion Damages on Long-Term Service Safety of Energy Pipelines)
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11 pages, 4881 KiB  
Article
Study of Temperature on the Corrosion Behavior of Antibacterial Steel by a Large−Scale Multiphase Flow Corrosion Test Loop
by Yunan Zhang, Yongqiang Zhang, Lei Wen, Wei Kong, Yinghua Yang, Jinyang Zhu, Fuhai Liu and Ying Jin
Materials 2022, 15(21), 7472; https://doi.org/10.3390/ma15217472 - 25 Oct 2022
Cited by 3 | Viewed by 1324
Abstract
The System #2 flow loop used in this study is a 4−inch−diameter, high−temperature, high−pressure system. In situ corrosion and electrochemical measurements were performed using a homemade flat corrosion specimen and a three−electrode probe. The experiment results show that temperature has an accelerated influence [...] Read more.
The System #2 flow loop used in this study is a 4−inch−diameter, high−temperature, high−pressure system. In situ corrosion and electrochemical measurements were performed using a homemade flat corrosion specimen and a three−electrode probe. The experiment results show that temperature has an accelerated influence on the corrosion of antibacterial alloy steel. With the increase of temperature and the presence of O2 in the environment, a loose and porous corrosion product film was formed on the surface of the resistant steel, which made it easier for the corrosion medium to enter the corrosion product film from the pore, thus accelerating the corrosion. Full article
(This article belongs to the Special Issue Influences of Hydrogen Effects and Corrosion Damages on Long-Term Service Safety of Energy Pipelines)
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17 pages, 7566 KiB  
Article
Microstructural Effects in the Development of Near-Neutral pH Stress Corrosion Cracks in Pipelines
by Ci Zhang, Minrui Ran, Yao Wang and Wenyue Zheng
Materials 2022, 15(13), 4372; https://doi.org/10.3390/ma15134372 - 21 Jun 2022
Cited by 7 | Viewed by 1496
Abstract
The corrosion and stress corrosion cracking (SCC) behaviors of 20#, X60, and X80 pipeline steels in a near-neutral pH environment were investigated by means of electrochemical measurement, immersion test, and interrupted slow strain rate tensile (SSRT) test. The propensity for SCC, as indicated [...] Read more.
The corrosion and stress corrosion cracking (SCC) behaviors of 20#, X60, and X80 pipeline steels in a near-neutral pH environment were investigated by means of electrochemical measurement, immersion test, and interrupted slow strain rate tensile (SSRT) test. The propensity for SCC, as indicated by the stress threshold value for crack initiation, was found to be dependent on the type of steel microstructure. Cracks were initiated in the high-strength steel X80 at a stress less than its yield strength, whereas in the other lower-grade steels, the initiation of cracks occurred after the yielding point. The threshold stress of SCC initiation in the near-neutral pH environment for 20#, X60, and X80 steels were 130.64% σys, 106.79% σys, and 86.92% σys, respectively. The SCC of 20# and X60 were characterized by the formation of transgranular and intergranular cracks, while X80 steel was only by transgranular cracking. The occurrence of corrosion had a great effect on crack initiation and the growth at the later stage. The latter involved hydrogen effects. A correlation between SCC sensitivity and the yield strength of the steel has been identified. Full article
(This article belongs to the Special Issue Influences of Hydrogen Effects and Corrosion Damages on Long-Term Service Safety of Energy Pipelines)
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